# Tag Info

• 1,331
Accepted

### Make 0 0 0 0 = 8

I think that This is because This works and is valid because
• 32.3k
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• 3,012

### Use 2, 0, 1 and 8 to make 109

Probably not the intended answer, but, I propose: Explanation:
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because
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• 8,692

### Make 0 0 0 0 = 8

Lateral thinking!
• 3,624
Accepted

I think...
• 656
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• 7,820
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• 138k

### too easy puzzle? Try it first!

The equation is equivalent to: As $A$ to $I$ are $1$ to $9$:
• 34.3k
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• 18.4k
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:
• 7,137

### 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:
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...
• 30.4k

### 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 ...
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• 3,197

### Can you make 1 1 1 1 = 5?

Here's another solution: Where:
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### Create all numbers from 0-100 only using all of 1,2,3,4 and 5

\$\begin{align} 0 & = (1 + 2 - 3) \times (4 + 5) \\ 1 & = 1 + (2+3-5) \times 4 \\ 2 & = 2 + (1+3-4) \times 5 \\ 3 & = 1 -2+3-4+5 \\ 4 & = 1 \times (2+3-5) + 4 \\ 5 & = 1-2-3+4+...
• 18.4k

### How to get 32 by using +1 , +1 , ×3 , ×3 , ÷2 , ÷2, ^2, ^2?

I like Glorfindel's answer as it takes you through an example solution, and I recommend his answer. Just to show some underlying beauty and complexity of this puzzle, I created a diagram (directed ...
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### How to solve 1 2 3 4 5 = 5 4 3 2 1 (insert five pluses to make it equal)? A thorough solution needed

Well, here is how I would (and did) solve it: First step: Without the « five + » constraint Second step: Getting rid of some « + » A solution we found: Extra note: finding all solutions
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let me try:
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Accepted

### My colleague gave me a number puzzle

Perhaps involving only subtracting, For example,
• 8,636