Questions tagged [calculation-puzzle]
A puzzle that involves numerical calculations, such as multiplication and addition.
661
questions
0
votes
0answers
46 views
Given n sets of varying length of input numbers, find possible sum solutions for a given output [on hold]
Not sure really if this fits into the category of a puzzle, but its an abstract problem I'm trying to solve for a side hobby of mine and would appreciate your input on it!
Inputs = [set1, set2.... ...
-5
votes
0answers
106 views
2
votes
1answer
110 views
Oops! Mixed up Multiplication - Needs to be Fixed
$Given$:
$U$, $V$, $C$ are distinct digits, varying from 1 to 9.
$U$ > $V$ > $C$
$UVC$, $VCU$, $CUV$ are concatenated Numbers
$(UVC)*(VCU)*(CUV)$ = $234235286$
The digits on the right hand side ...
11
votes
6answers
1k views
Some interesting calculation puzzle that I made
So I'm creating some kind math puzzle that goes like this:
1=-2+3
12=3*4
123=(4*5)+(6+7)*8-9+10 (thanks JS1 for finding shorter one)
1234=(5*6*7*8)-(9+10+11+12+13+14+15+16+(17*18)+19+20+(-21+22))
...
2
votes
1answer
258 views
What's the missing number?
$\begin{array}{ccc}6&7&4\\
4&11&14\\
13&2&11\\
6&8&1\\
15&3&?\end{array}$
Own attempt at building a puzzle,
find the missing number.
1
vote
1answer
80 views
Express the given Fractions as Continued Fractions
Using only the numbers, $1$, $2$, $12$.
No concatenations allowed.
Only permitted signs are plus and division.
Brackets are not needed.
Expressions should be as concise as possible.
Typical ...
5
votes
3answers
242 views
Find the missing Number?
This is Tricky Puzzle That Will Totally Blow Your Brain.
Source with answer:
Note:
if you answer, do it with an explanation.
1
vote
1answer
64 views
Figure out this Four digit Palindrome with two distinct digits and
The sum of the digits of the palindrome is
Same as the number remaining after last two digits are removed.
10
votes
2answers
1k views
sorting 4 numbers using Min - Max boxes
Min-Max is a box that is capable of determining which of the two numbers is the higher (Max) and which is lower (Min).
I need to use minimum amount of boxes in order to sort 4 different numbers (any ...
2
votes
1answer
95 views
Resolve these Highly Narcissistic Relations
$U$, $V$, $C$ , $D$ , $E$, $F$, $G$, $H$, are distinct digits, varying from 1 to 9.
$UVCD$, $EFGHD$, $EHHEV$ are concatenated numbers.
Please deduce these with concise reasoning from the given ...
3
votes
1answer
95 views
Take out one Third..Keep Two Third..To Total Ten
There are total 36 numbers in the grid shown in the picture.
Cross out 12 of them and keep 24 of them.
Sum of the rest of the numbers should total 10 for each row and column.
11
votes
1answer
499 views
Professor Roman gives unusual math quiz ahead of
His usual Monday Morning 8am class.
This is for extra AAA credits.
$A$, $B$, $C$ are distinct digits.
$AA$, $BA$, $BBAAA$, $CBBBAB$ are distinct numbers.
Please deduce these with concise reasoning ...
5
votes
1answer
120 views
Perfect Powered Relations - Please Figure them out
$D$, $E$, $F$, $G$, $H$, $S$, $T$, $U$, $V$ are distinct digits and can vary from 0 to 9.
$DE$, $FGH$, $ESDE$, $SS$, $ST$, $SU$ are all concatenated Numbers.
From the given Relations below, deduce ...
6
votes
2answers
350 views
Go Get the Six Six-Pack
And fill with right Mathematical operands and enjoy.
Six Relations shown in the pictures are missing the right operands.
You can only use plus, minus, multiplication, division signs in between the ...
4
votes
1answer
50 views
Deduce the Missing Digits from the given Relations
Picture shown below contains 3 horizontal and 3 vertical relations.
Digits to be filled vary from 1 to 9.
Order of operations is given following the arrows vertically and horizontally.
-3
votes
2answers
127 views
How do you Solve an Age-Old Problem? [closed]
Mansion has a son (Mark) and a daughter (Mindy). Mark is older than Mindy.
Five years ago, Sum of Mark and Mindy’s ages was twenty two. Five years from now, Mark will be exactly twice as old as Mindy....
1
vote
3answers
193 views
Jack and Jill went up the Hill to play
A Simple Card Game.
This deck of cards has only four cards simply labeled 1, 2, 3, 4. They are placed face down.
Jack and Jill take turns to draw a card. You sum up the numbers drawn so far after ...
-5
votes
1answer
86 views
Express 50 to 100 with constituent digits only…my 100th pzl on 50th day
Using the following rules only, Express the numbers from 50 to 100 using only digits in the number. Concise with minimum number of characters is preferred.
No concatenation of numbers allowed.
Only, ...
2
votes
2answers
134 views
Find the “X “in the Box
Interlocked Rings shown in the picture share a common sum of 28.
The numbers to be filled vary from 1 to 12 and do not repeat.
Already four numbers..8, 9, 10, 11 are placed.
Fill the X s with rest ...
9
votes
3answers
4k views
Too early in the morning to have SODA?
Each letter shown represent distinct digit...can vary from zero to nine.
$COCA$, $COLA$, $SODA$ are three concatenated numbers.
Figure these out from the following relation:
$COCA + COLA = SODA$
9
votes
1answer
198 views
One to Eleven Sum to Twenty Five
From the picture shown below, deduce the missing numbers (one to eleven)... none of them repeating.
Four Numbers surrounding the Five diamonds A, B, C, D, E, as well as the five numbers in the outer ...
6
votes
2answers
167 views
Take Twelve to Total Twenty Two
Without repeating the numbers 1 to 12,
Fill the grid below to total 22 in both directions.
$$\def\X{\smash{\rlap{\Space{7pt}{0px}{0px}\llap{\Huge{\times}}}}}
\Large\begin{array}{|c|c|c|c|}\hline
&...
3
votes
1answer
103 views
A Lollipop with Roots
$Given$:
$S$, $T$, $U$, $V$. are distinct digits which can vary from zero to nine, with $V>U$.
$ST$, $STT$ are concatenated Numbers.
Deduce S, T, U, V from the following relationship.
$$ST=\...
4
votes
1answer
81 views
An Arithmetic loving Ant crawls to one Hundred
This ant can do arithmetic but can crawl only horizontally or vertically, never diagonally.
It starts from one of the cells shown in the picture below. It’s path covers thirteen different numbers ...
-9
votes
2answers
120 views
Time detective duty [closed]
Consider that you have a beautiful wife (husband). But your after-marriage life is not so beautiful. Your wife (husband) has performed a first adultery act 5 years after a marriage with you and later ...
0
votes
0answers
60 views
Distinct SemiPrimes with Close Factors
I'm in the midst of developing a game for several friends as a friendly competition.
It begins with generating the largest distinct semiprime feasible with factors that closely related in length ...
5
votes
1answer
123 views
Any Volunteers for Card Counting?
You are given 2 matching card decks with Aces, Kings, Queens, Jacks removed. Now each deck has 36 cards.
One deck is shuffled and placed on top of the other deck. Starting from the top card, you ...
5
votes
3answers
197 views
Find the Missing Members of this Powered Sequence
There are 4 missing members in this small series...labeled ???.
Hint 1;
Hint 2:
Complete the series.
$191$, $426$, $931$, $???$, $???$, $646$, $971$, $???$, $???$
11
votes
4answers
3k views
Use 1 9 6 2 in this order to make 75
I'm looking for a solution to make number $75$ with numbers $1$ $9$ $6$ $2$ in that order and the same rules as in Use 2 0 1 and 8 to make 67.
Here a copy of those rules:
You must use all 4 digits.
...
0
votes
1answer
128 views
Don’t let this daunting equation dissuade you to deduce the desired result
Given:
A, B, P are distinct digits.
AA, AAA, ABB are concatenated numbers.
Relations:
$$P=A+A+B$$
$$(AA + ABB)^P-(ABB)^P=(AAA - A) ^P+(B+B^B*B)^P+(B^B)^P$$
Don’t be afraid to make reasonable ...
12
votes
2answers
227 views
I Want Some Ice Cream
This is similar to the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. Giving credit where credit is due.
I was sitting at Landra Hort's Mystery Ice ...
0
votes
1answer
194 views
Number Sequence Series-Question 8
This is a series of questions that are created by me.
Here is question 8:
(36),(45),?,(17),(50),?,(29)
I will give a hint to you guys if I feel it is necessary.
$$$$
You can check other unsolved ...
3
votes
0answers
583 views
Number Sequence Series-Question 7
This is a series of questions that are created by me.
Here is question 7:
(23)，(55)，(155)，(1255)，？，？，(56139611)
I will give a hint to you guys in one month if nobody can solve it.
5
votes
0answers
162 views
Numerical puzzle
A friend of mine sent me this puzzle, to solve it you need to use:
1) basic arithmetic operations.
2) Multiple numeral systems.
1
vote
2answers
94 views
Math quiz from a book [closed]
A student took some exams. The arithmetical average of his grades is 25. He takes another exam today and he gets a 30, so the arithmetical average of his grades becomes 26. How many exams did he take, ...
5
votes
1answer
118 views
Number Sequence Series-Question 6
This a series of questions that are created by myself.
Since question 6 is not that difficult I will not give any hint to you guys.
Enjoy the test.
Here is question 6:
2,6,8,7,5,3,?
$$$$
If you ...
3
votes
1answer
97 views
Number Sequence Series-Question 5
This a series of questions that are created by myself.
I will give a hint in 24 hours and my answer in 3 days given that nobody could answer my question.
Here is question 5:
342,765,?,242325 (It ...
2
votes
3answers
84 views
Number Sequence Series-Question 4
I want to share a series of questions that are created by myself.
I will give a hint in 24 hours and my answer in 3 days if nobody could answer my question.
Previous ones are here:
Number Sequence ...
2
votes
1answer
143 views
Number Sequence Series-Question 3
I want to share a series of questions that are created by myself.
I will give a hint in 24 hours and my answer in 3 days given that nobody could answer my question.
Here is my number sequence:
2020,...
3
votes
2answers
152 views
Can you express this orderly Palindromic Devil in strict ascending Pandigital form?
Given:
Devil as you know is $ 666 $
Using digits 1 to 9 in strict ascending order and only three mathematical signs ( +, -, /, x ... of these are allowed), write the Pandigital expression
$ 666 = ...
1
vote
1answer
169 views
Be a Wizard..Find the missing digits of this 41 digit Humongous Palindromic Square!
Absolutely No calculators or computers.
Only Simplest Method for finding the missing digits will be accepted as the right answer.
Given:
The square of this 21 digit number
$ 229 359 782 235 085 ...
4
votes
1answer
272 views
Number Sequence Series-Question 2
I want to share a question that is created by myself.
I will give a hint in 24 hours and my answer in 3 days given that nobody could answer my question.
Here is my number sequence:
1441,2882,5764,?,...
4
votes
3answers
304 views
Number Sequence Series – Question 1
I want to share a question that is created by myself.
I will give a hint in 24 hours and my answer in 3 days given that nobody could answer my question.
Here is my number sequence:
$3/2, 2/3, 3/4, ...
5
votes
1answer
318 views
Find the next term
Here, we have a sequence.
0 , 15 , 23 , 155 , 287 , 539 , 767 , ?
Can you find the next element ?
HINT 1
HINT 2
HINT 3
0
votes
1answer
129 views
How much did he pay for the car? [closed]
A man withdrew half the money that was in his bank account to buy a second-hand car, then sold the car two weeks later, receiving only three-quarters of the price he had paid for it. When he paid the ...
5
votes
3answers
292 views
How to solve this number-sequence?
My friend gave me this fun puzzle to solve but I still cannot figure out the logic between them...
1,3,4,7,8,11,14,15,19,22,23,25,26,?,?,?,?
Could anyone help me solve it?
17
votes
3answers
2k views
France's Public Holidays' Puzzle
In France, there are 11 public holidays. As a French employee who enjoys public holidays on week days, you want to know if it is possible that all of the 11 public holidays during one year fall on ...
5
votes
2answers
168 views
Two, completely independent, means exist to obtain the same answer
... one "local"; and one "global"
1) 1 + 1 = 2
2) 2 + 1 = 4
3) 3 + 2 = 9
4) 5 + 3 = 17
5) 7 + ?? = 32
Can you determine the correct answer ...
0
votes
2answers
100 views
Max pieces to cover a chess board [closed]
Number of individual chess pieces to cover all chess board
1
vote
1answer
199 views
Extremely Long Difficult Number Sequence
(2 7 4 4 5 7),
(?),
(2 1 3 2 1 7 1 4 1 5),
(2 2 4 1 1 3 1 7 1 4 1 5),
I can't find any links between these numbers, anyone could help me solve it?
