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Question

The value of (95)2 is
  1. 9025
  2. 90025
  3. 90205
  4. 85025

A
9025
B
90025
C
90205
D
85025
Solution
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The correct option is A 9025
(95)2 = (100 - 5)2
= (100)2 + (5)2 - 2 x 100 x 5
[formula : a2 + b2 - 2ab]
= 10000 + 25 - 1000
= 10025 - 1000
= 9025

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