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product of integers between 2 nos

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product of integers between 2 nos

by tejaswinibn » Thu Jul 24, 2008 10:43 am
If s is a product of the integers from 100 to 200,inclusive,and t is the product of the integers between 100 and 201,inclusive,what is 1/s+1/t interms of t?
A)(201)^2/t
B)(201)(202)/t
C)201/t
D)202/t
E)[(201)(202)/t^2]
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by ricky » Thu Jul 24, 2008 11:20 am
Its D.


S=100*101*102......*200
t=100*101*102*.....*200*201

=> s=t/201

insert value of s in 1/s +1/t
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