Make an equation true by moving one of the cards

Question

I came accross with this puzzle:

There is an equation written in cards so that every card represent a number or a mathematical symbol. Move one of the cards so that equation is true. The equation looks like this:

$2 * ( 5 - 1 ) * 3 = \mathrm{3}^{3}$

Here symbol * means multiplication. I am stumped with this question. The moving of the card is in my opinion ill-defined operation as if you move for example number 1 then there is minus - sign left alone. Any hints would be much appreciated!

Hint: $3^3 = 9\times 3$ – JMoravitz Sep 21 '19 at 17:30 — JMoravitz, Sep 21 '19 at 17:30

score 4 · Answer 1 · answered Sep 21 '19 at 17:32

4

Moving the left hand bracket gives the correct equation $$(2\times5-1)\times3=3^3$$

answered Sep 21 '19 at 17:32

Peter Foreman

19,947

I feel so silly now :-) ! Thanks! – Mixer Sep 21 '19 at 17:36

Make an equation true by moving one of the cards

1 Answers1