# Some non-mathematical puzzles!!! Use your mind!!!

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, = , +. Note by Kartik Sharma
6 years, 2 months ago

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Answers will be posted on 1st August!!

- 6 years, 2 months ago

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

- 6 years, 1 month ago

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 $.$ $5+5+5\neq550$

- 6 years, 2 months ago

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

- 6 years, 2 months ago

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').

- 6 years, 2 months ago

- 6 years, 2 months ago

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

- 6 years, 2 months ago

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)

- 6 years, 2 months ago

or $2+5=3+4$

- 6 years, 2 months ago

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

- 6 years, 2 months ago

yeah. sorry, missed where he said 'only once'.

- 6 years, 2 months ago

Yeah, that's correct!!!

- 6 years, 2 months ago

Question 1

$5 + 545 = 550$

Question 2

$5 + 55 = 60$

Question 3

$4 + 5 = 3^2$

Am I right?

- 6 years, 1 month ago

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

otherwise you are absolutely correct!!!

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

- 6 years, 1 month ago

Oh, then what you said.

- 6 years, 1 month ago

sorry?

- 6 years, 1 month ago