Question

What will be the final figures after rounding off $3.845$ and $3.835$ , respectively, to $3$ significant figures?

• A. $3.85\text{and}3.84$
• B. $3.84\text{and}3.83$
• C. $3.85\text{and}3.83$
• D. $3.84\text{and}3.84$

Answer 1

Answer: (D)

The number $3.845$ rounded-off to three significant figures becomes $3.84$ since the preceding digit is even. On the other hand, the number $3.835$ rounded-off to three significant figures becomes $3.84$ since the preceding digit is odd.