Trying again, since I got no good answers...?

1 ⤊

Trying again, since I got no good answers...?

Using each of the following digits once (and ONLY once), you must reach 21.

1,5,6,7

At your disposal are the 4 basic math functions only! (+,-,*,/)

And no, you cannot say that 1 and 5 are 15.

Good luck! (Yes, it CAN be done legitimately)

2007-03-19 00:11:43 · 2 answers · asked by blighmaster 3 in Science & Mathematics ➔ Mathematics

2 answers

6x5-(7+1)= 21

2007-03-22 09:16:40 · answer #1 · answered by Avalanche33 2 · 0⤊ 1⤋

Can I use a decimal point?
21 = .1 * 5 * 6 * 7

2007-03-19 00:30:36 · answer #2 · answered by falzoon 7 · 1⤊ 0⤋