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Decimal Fraction

Q1:

The expression (11.98 x 11.98 + 11.98 x x + 0.02 x 0.02) will be a perfect square for x equal to:

A 0.02

B 0.2

C 0.04

D 0.4

ANS:C - 0.04

Given expression = (11.98)2 + (0.02)2 + 11.98 x x. For the given expression to be a perfect square, we must have 11.98 x x = 2 x 11.98 x 0.02 or x   = 0.04



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