K and L are each four-digit positive integers with thousands, hundreds, tens, and units digits defined as a, b, c,
and d, respectively, for the number K, and p, q, r, and s, respectively, for the number L. For numbers K and L, the
function W is defined as 5^a*2^b*7^c*3^d ÷ 5^p*2^q*7^r*3^s. The function Z is defined as (K - L) ÷ 10. If W = 16, what is the value
of Z?
(A) 16
(B) 20
(C) 25
(D) 40
(E) It cannot be determined from the information given.
[spoiler]OA:D[/spoiler]
and d, respectively, for the number K, and p, q, r, and s, respectively, for the number L. For numbers K and L, the
function W is defined as 5^a*2^b*7^c*3^d ÷ 5^p*2^q*7^r*3^s. The function Z is defined as (K - L) ÷ 10. If W = 16, what is the value
of Z?
(A) 16
(B) 20
(C) 25
(D) 40
(E) It cannot be determined from the information given.
[spoiler]OA:D[/spoiler]
Last edited by abhi332 on Thu Feb 25, 2010 2:22 pm, edited 1 time in total.
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