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  1. The value of (0.98)3 + (0.02)3 + 3 × 0.98 × 0.02 –1 is :
    1. 1.98
    2. 1.09
    3. 1
    4. 0
Correct Option: D

Expression
= (0.98)3 + (0.02)3 + 3 × 0.98 × 0.02 – 1
= (0.98)3 + (0.02)3 + 3 × 0.98 × 0.02 (0.98+0.02) –1
= (0.98 + 0.02)3 – 1 = 1–1 = 0


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