Question

Which of the following is not equal to 1.8 × 10–18?
(1) 0.000018 × 10–23 (2) 18000 × 10–22
(3) 0.18 × 10–17 (4) 0.000000018 × 10–10

Answer 1

$0.000018 \times 10 - 23$