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repeat post is regrettedbhumika.k.shah wrote:How many different sets of positive square integers, each greater than 1, add up to 75?
(A) 4
(B) 7
(C) 10
(D) 12
(E) 13
how to start solving this sum ? is there some formula that i am unaware of ??
OA E
sanju09 wrote:Miss 1, take 4, 9, 16, 25, 36, 49, 64 in to account only, and then delete 64 from the list, for no combination from the remaining 6 square integers may add up to 11. Carry on deleting; now 49, for no combination from the remaining 5 square integers may add up to 26; then 36, for no combination from the remaining 4 square integers may add up to 39 and finally forget 25 going to combine with the three little champs 4, 9, and 16 to give us a total of 75. Fusssss…bhumika.k.shah wrote:How many different sets of positive square integers, each greater than 1, add up to 75?
(A) 4
(B) 7
(C) 10
(D) 12
(E) 13
how to start solving this sum ? is there some formula that i am unaware of ??
OA E
When we consider a set, we mean no repetition in elements, if by any chance, this question is allowing us to consider repetition in elements too, then a shot can be tried, but, order first!!
ok so they mean, any integer, “each greater than 1” is not the case really. Is it so, duongthang?"how many different integers, sum of square of which is 75
duongthang wrote:this is from GMATPREP
but your writing is wrong
"how many different intergers", not " different set of intergers"
"how many different integers, sum of square of which is 75
