A) 5040
B) 7180
C) 8150
D) None of these
Correct Answer: B
Solution :
The total number of two factor products\[{{=}^{200}}{{C}_{2}}\]. The number of numbers from 1 to 200 which are not multiples of 5 is 160. Therefore total number of two factor products which are not multiple of 5 is\[^{160}{{C}_{2}}\]. Hence the required number of factors \[{{=}^{200}}{{C}_{2}}{{-}^{160}}{{C}_{2}}=7180\].You need to login to perform this action.
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