Hey, please see the attachment below and see the 2nd question, please find the answer!

a) (8×10^-3)×(2×10^-4)= 16×10^-7= 1.6×10-6

b) (6×10^2)÷(3×10^-5)= 2×10^(2+5)= 2×10^7

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

answer:

your answer is: c. 196 7/8 in^3.