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119 votes

Make 0 0 0 0 = 8

A lateral thinking answer:
let_the_coding_begin's user avatar
114 votes
Accepted

Make 0 0 0 0 = 8

I think that This is because This works and is valid because
El-Guest's user avatar
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111 votes

3:3! It's a football score!

Does this count?
Yly's user avatar
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108 votes
Accepted

3:3! It's a football score!

If you are allowed to use decimals, then
Cameron White's user avatar
93 votes
Accepted

Can you make 1 1 1 1 = 5?

How about
Reinis Mazeiks's user avatar
78 votes
Accepted

How many consecutive positive integers can you make using exactly four instances of the digit '4'?

Answer: How?
f'''s user avatar
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77 votes

Use 2, 0, 1 and 8 to make 109

Probably not the intended answer, but, I propose: Explanation:
Surb's user avatar
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75 votes

Make 0 0 0 0 = 8

because
Teemu Piippo's user avatar
74 votes

Use the numbers 1-9 to equal 1150

Here's an answer which
Rosie F's user avatar
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71 votes

3:3! It's a football score!

Since the puzzle oddly and specifically mentions the symbol for the square root, I used this: but rotated and reflected it giving:
Dan Russell's user avatar
67 votes

3:3! It's a football score!

Another answer could be
dcfyj's user avatar
  • 7,756
64 votes

Make 0 0 0 0 = 8

Lateral thinking!
TheSimpliFire's user avatar
63 votes
Accepted

Use 2, 0, 1 and 8 to make 109

I think...
bluestapler's user avatar
62 votes
Accepted

Make e using 1, 2, 3, 4, 5, 6, 7, 8, 9

Parcly Taxel's user avatar
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60 votes
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Number 88 from the digits 2, 0, 1 and 7?

What about this where
hexomino's user avatar
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58 votes

too easy puzzle? Try it first!

The equation is equivalent to: As $A$ to $I$ are $1$ to $9$:
athin's user avatar
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56 votes
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Create all numbers from 0-100 only using all of 1,2,3,4 and 5

Also, you can use any operation. Ok then. $\begin{array}{c|c} 0 & \log_{\frac1 2} \left( \log_{4!!-3} 5 \right) \\ 1 & \log_{\frac1 2} \left( \log_{4!!-3} \sqrt 5 \right) \\ 2 & \log_{\...
minseong's user avatar
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54 votes
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Making 103 from 4 zeroes

As rand al’thor points out in the solution built upon here, there must be a way to formulate a $\small 3$ with only two $\small 0 \kern1mu$s.   How promising that...   &...
humn's user avatar
  • 21.9k
53 votes

Number 88 from the digits 2, 0, 1 and 7?

No rules? Looks like 88 to me if I squint.
Andrew Morton's user avatar
53 votes

Can you make 1 1 1 1 = 5?

How about such a variant?
KstuRoot's user avatar
  • 559
52 votes
Accepted

A clock for 2017

With the digits in order: $$ \begin{align} 1 &= 2 + 0 - 1 ^ 7 \\ 2 &= 2 + 0 \times 1 \times 7 \\ 3 &= 2 + 0 + 1 ^ 7 \\ 4 &= -2 - 0 - 1 + 7 \\ 5 &= 2 \times (0 - 1) + 7 \\ 6 &= ...
2012rcampion's user avatar
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52 votes
Accepted

Make 5 5 5 5 = 19

Here's one way I found: Or, using just the characters explicitly allowed in the question:
Riley's user avatar
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49 votes

A truly amazing way of making the number 2016

JMP's user avatar
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48 votes
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A truly amazing way of making the number 2016

And three more à la Perry
Pietro Majer's user avatar
48 votes

A clock for 2017

I tried to make a digital clock. $0 = (7 + 1 + 2) \times 0$ $1 = (2 + 7 + 1) ^ 0$ $2 = (7 + 1) \times 0 + 2$ $3 = 7 \times 0 + 2 + 1$ $4 = 2 \times 7 - 10$ $5 = 7 - 2 + 1 \times 0$ $6 = 7 - 1 + 2 \...
Marius's user avatar
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48 votes
Accepted

Doubling/tripling puzzle: make 1 from 1536 in as few steps as possible

As Jo has already shown, this can be accomplished in To help visualize this problem, we can imagine: Proving minimality:
ManyPinkHats's user avatar
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48 votes

Combine 1,3,3,7 to get 10

As quite standard in this kind of hard number puzzle, we can: Another example of this form being the only solution is: Use 1, 2, 3, 8 to make 28 with the unique (up to commutation) solution being:
justhalf's user avatar
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43 votes

What is the smallest set of letters that can spell any integer?

...
Oray's user avatar
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43 votes

How to get 5 from 0,0,0 and 1?

First off, latest edit - just for fun, how to get 5 from just 0 and 1: Before rule change posted: With the changed rules: And while we're at it, here's $0$ to $28$: And here's how to get 5 from ...
Paul Evans's user avatar
  • 9,431
43 votes

Maximize the number of factorials in your solution to 6 5 4 3 = 1

The answer is
Bennett Bernardoni's user avatar

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