What is the value of (0.4 × 0.4 × 0.4 + 0.02 × 0.02 × 0.02) ÷ (1.2 × 1.2 × 1.2 + 0.06 × 0.06 × 0.06)?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. .
(0.4 × 0.4 × 0.4 + 0.02 × 0.02 × 0.02) ÷ (1.2 × 1.2 × 1.2 + 0.06 × 0.06 × 0.06)
= (0.43 + 0.023) ÷ (1.23 + 0.063)
= (0.064 + 0.000008) ÷ (1.728 + 0.000216)
= 0.064008 ÷ 1.728216
= 64008/1728216
= 1/27