Question

which is greater
a
$2.5 \times 10 ^{5} or \: 7.4 \times 10 \\ b \: \: \: 1.9 \times 10 {}^{ - 6} or1.2 \times 10$
​

Answer 1

Which is greater?

a. 2.5 × 10⁵ or 7.4 × 10

$\implies$ 2.5 × 10⁵ is greater...

b. 1.9 × $\sf{10^{-6}}$ or 1.2 × 10

$\implies$ 1.2 × 10 is greater...