Question

Which of the following expressions will produce an answer with three significant figures? Check all that apply. A. 101 - 83.4 B. 121 - 1.75 O C. 7.23 + 12.6 D. 17. 1.5​

Answer 1

Answer: option A and D results in 3 significant figures.

Explanation:

A.
`101 - 83.4 =17.6`

The number 17.6 has three significant figures.

B.
`121 - 1.75 =119.25`

The number 119.25 has 5 significant figures

C.
`7.23 + 12.6=19.83`

The number of 19.83 has 4 significant figures.

D.
`17\cdot 1.5=25.5`

The number of 25.5 has 3 significant figures.

Hence, option A and D results in 3 significant figures.