Question

(4×10^2)×(2×10^1)×(3×10^3 )

Answer 1

$(4×10^2)×(2×10^1)×(3×10^3 ) \\ =( 4 \times 100) \times (2 \times 10) \times 3 \times 1000000 )\\ \\ = 400 \times 20 \times 3000000 \\ \\ = 2.4e10$

hence,

its is the correct answer

Answer 2

Answer:

( 4 × 10^2) × (2 × 10^1) × (3 × 10^3)

= ( 4 × 100) × (2 × 10) × (3000000)

= 400 × 20 × 3000000

= 2.4e 10