ordered triples

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Fri, 2009-08-14 15:00
divay
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Question 1

How many ordered triples (x, y, z) of positive integers are solutions of x + y + z = 100?

(A) 4851             (B) 98!                (C) 5151             (D) 100C3                 (E) 99!

Question 2

How many values of n exist such that:10 <= n <= 30,and n! is divisible by (n+2) ?
(A) 30   (B) 18   (C) 17   (D) 16   (E) 15

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Tue, 2009-08-18 13:16
#1
Incognito
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Ans 2) Is it (E)...n

Ans 2) Is it (E)...n cannot be 11,15,17,21,27,29

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Fri, 2009-10-30 19:32
#2
TheSuccorer
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Ans to 1 is b>

102C2 =102*101/2= 5151

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Fri, 2009-11-27 10:54
#3
humraj
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HUMRAJ..........

Q.1 4851

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