Prove the following just by drawing a single line:

```
5 + 5 + 5 = 550 [You cannot use the line on equality.]
```

THE EASY ONE - Use a number 3 times and addition sign(s) to get the number 60. You cannot use 20.

Another EASY ONE - Use the following only once to make an equation-

2, 3, 4, 5, = , +.

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## Comments

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TopNewestQuestion 1\(5 + 545 = 550\)

Question 2\(5 + 55 = 60\)

Question 3\(4 + 5 = 3^2\)

Am I right?

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solution to question 3 should be 4 + 5 = 3^2

otherwise you are absolutely correct!!!

You cannot use even "+" sign more than once!!!

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Oh, then what you said.

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Question 3:

4+5=3²

Question 1: Is this possible?

5 + 5 4 5 = 550 (draw a line through the plus sign to make it a four)

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Yeah, that's correct!!!

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or \(2+5=3+4\)

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But I think that you can only use the addition sign once.

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Not sure if they the correct answer,

Question 2 :, using \(5\) three times, \[.\] \[55+5=60\] \[.\]\[.\]Question 1 :draw the line on the equal sign, consequently the equation becomes an inequality \[.\] \[5+5+5\neq550\]Log in to reply

by the way, solution to Q2 is correct!!!

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oh, didn't I say that you cannot use that inequality sign?

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You said nothing, you only told us to draw some line and he drew the line on the equality sign. There's nothing wrong with that, so if you don't like this solution, you'll have to change the problem a bit (add some constraints, e.g. 'you can't use the line on the equality sign').

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Answers will be posted on 1st August!!

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Ah! You solved them all. So, no answers I can post today!! ;)

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