User A. P.

25 votes

68 coins with 100 weighings

answered Oct 15, 2017 at 18:46

25 votes

Accepted

Integers around a circle with consecutive pairs adding to a square

answered Nov 19, 2017 at 3:13

17 votes

Accepted

The three utilities puzzle

answered Dec 24, 2017 at 10:15

17 votes

Accepted

How can you get 125 from 2,3,4,5,6?

answered Nov 18, 2017 at 19:29

15 votes

The Lazy Laser Physicist

answered Jan 2, 2019 at 5:06

14 votes

Accepted

How many lemons?

answered Oct 21, 2017 at 7:52

13 votes

Accepted

Ray reflection inside the cube

answered Jan 11, 2019 at 23:29

11 votes

How much money can we make?

answered Mar 10, 2018 at 20:39

11 votes

Accepted

Help me unlock my bike

answered Nov 19, 2017 at 21:00

10 votes

Breaking Balance (Part C)

answered Jan 26, 2019 at 18:22

10 votes

Easy Riddles #5: What thing am I?

answered Feb 22, 2018 at 7:23

9 votes

Accepted

How many Christmas Trees?

answered Jan 5, 2018 at 22:46

9 votes

Answer is three words forming a phrase (3rd of a rebus series)

answered Feb 6, 2018 at 20:05

9 votes

Radar towers in a military field

answered Oct 24, 2017 at 21:17

9 votes

Accepted

Polarizing Encryption: What does it say?

answered Nov 8, 2017 at 0:08

8 votes

Drawing balls from a pocket

answered Nov 13, 2017 at 23:13

7 votes

Accepted

Three baskets with numbered balls

answered Oct 11, 2017 at 20:21

7 votes

Make 2008 from Φ (Golden Ratio)

answered Jan 22, 2018 at 0:20

7 votes

Breaking Balance (Part A)

answered Jan 26, 2019 at 22:25

7 votes

Determine a polynomial with nonnegative integer coefficients with minimum queries

answered Mar 21, 2020 at 15:36

6 votes

Breaking Balance (Part A)

answered Jan 26, 2019 at 14:46

6 votes

Mr.Q : Make rainbow

answered Jan 24, 2018 at 18:41

5 votes

Fibonacci Decimals and their Sums

answered Dec 1, 2017 at 23:42

4 votes

How is it possible that not even the driver noticed the flat tire during the journey?

answered Dec 17, 2017 at 12:24

4 votes

Accepted

Two dice with same probability for each sum mk2

answered Dec 31, 2019 at 16:16

3 votes

Accepted

Making proportions equal

answered Feb 17, 2018 at 21:48

3 votes

Pick seven numbers so that every operation gives same result

answered Mar 1, 2018 at 7:26

3 votes

Accepted

Make 'b' the subject in the quadratic formula

answered Jan 7, 2019 at 20:30

3 votes

Count,Count How many legs?

answered Dec 17, 2017 at 14:04

3 votes

How to be prepared for a pop quiz

answered Dec 17, 2017 at 16:09

Stack Exchange Network

37 Answers

68 coins with 100 weighings

Integers around a circle with consecutive pairs adding to a square

The three utilities puzzle

How can you get 125 from 2,3,4,5,6?

The Lazy Laser Physicist

How many lemons?

Ray reflection inside the cube

How much money can we make?

Help me unlock my bike

Breaking Balance (Part C)

Easy Riddles #5: What thing am I?

How many Christmas Trees?

Answer is three words forming a phrase (3rd of a rebus series)

Radar towers in a military field

Polarizing Encryption: What does it say?

Drawing balls from a pocket

Three baskets with numbered balls

Make 2008 from Φ (Golden Ratio)

Breaking Balance (Part A)

Determine a polynomial with nonnegative integer coefficients with minimum queries

Breaking Balance (Part A)

Mr.Q : Make rainbow

Fibonacci Decimals and their Sums

How is it possible that not even the driver noticed the flat tire during the journey?

Two dice with same probability for each sum mk2

Making proportions equal

Pick seven numbers so that every operation gives same result

Make 'b' the subject in the quadratic formula

Count,Count How many legs?

How to be prepared for a pop quiz