It's Called "The Four Two's."
You start out with four twos, and you need to use the order of operations (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction) to fill in the blanks so that you end up with number 0 through 10.
2 2 2 2 = 0
2 2 2 2 = 1
2 2 2 2 = 2
etc. etc. down to
2 2 2 2 = 10
ex. ( 2 + 2 ) - ( 2 + 2 ) = 0
( 2 / 2 ) + (2 - 2) = 1
I just can't figure out how to get numbers 7 or 9!! It's driving me crazy. Can any math genius help me figure it out? =D
THANK YOU!
2007-09-06 17:10:14 · 5 answers · asked by Anonymous in Education & Reference ➔ Homework Help
Oh, and you can only use the four two's. No other numbers added in there.
2007-09-06 17:36:17 · update #1
(2^2 + 2)+ (2 / 2) = 7
(2^2 x 2)+ (2 / 2) = 9
2007-09-06 17:23:53 · answer #1 · answered by sweettart4852 3 · 0⤊ 0⤋
Nine is pretty simple. You can actually make 22 out of 2 of the ... uh ... twos.
22/2- 2= 9
I can't figure out number 7 though, I'm sorry.
2007-09-06 17:29:09 · answer #2 · answered by lucklessslinger 1 · 0⤊ 0⤋
(2 + 2/2)^2 = (2 + 1)^2 = 3^2 = 9
but can't get the 7
2007-09-06 17:22:06 · answer #3 · answered by Beardo 7 · 0⤊ 0⤋
((2^2 x 2^2) - 2)/2 = 7
((2^2 x 2^2)/2) + 2 = 9
i don't know if that follows your rules as far as exponents go, but that is one solution.
2007-09-06 17:24:18 · answer #4 · answered by Stev 3 · 0⤊ 0⤋
I can't help you, but maybe you should put it in Science and Mathematics where the geniuses are!
2007-09-06 17:18:40 · answer #5 · answered by Anonymous · 0⤊ 0⤋