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B
9975
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C
9925
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D
9950
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Solution
The correct option is B 9975 95 can be written as 100 - 5 and 105 can be written as 100+ 5. 95×105=(100−5)×(100+5) which is in the form (a−b)(a+b) where a = 100 and b = 5.
We know that,(a−b)(a+b)=a2−b2 95×105=(100−5)(100+5)=1002−52 =10000−25 =9975