Question

Mark (✓) against the correct answer
0.4 × 0.4 × 0.4 = ?

(a) 6.4
(b) .64
(c) .064
(d) none of these

Answer 1

(c) .064

First, we will find the product 4 $\times$ 4 $\times$ 4 = 64
Sum of decimal places in the given decimals = (1 + 1 + 1) = 3
∴ 0.4 × 0.4 × 0.4 = 0.064 ( 3 places of decimal)