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Decimal Fraction - General Aptitude

Q1:

The value of (0.96)3 - (0.1)3 is:
(0.96)2 + 0.096 + (0.1)2

A 0.86

B 0.95

C 0.97

D 1.06

ANS:A - 0.86

Given expression
= (0.96)3 - (0.1)3
(0.96)2 + (0.96 x 0.1) + (0.1)2
 
= a3 - b3
a2 + ab + b2
 
= (a - b)
= (0.96 - 0.1)
= 0.86