The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give

Question

Philoid · Accepted Answer

RULES OF ROUNDING OFF MEASUREMENT:

1. If the digit after the digit to be rounded off is less than 5, then the preceding digit remains same.

2. If the digit after the digit to be rounded off is more than 5, then the preceding digit increases by one.

3. If the digit after the digit to be rounded off is 5 followed by digits other than zero, then the preceding digit increases by one.

4. If the digit after the digit to be rounded off is 5 and the no. to be rounded off is even, then the number to be rounded off remains same.

Example- 1.285 becomes 1.28 after rounding off

5. If the digit after the digit to be rounded off is 5 and the no. to be rounded off is odd, then the number to be rounded off increases by one.
Example- 1.215 becomes 1.22 after rounding off

Now, here in the given question,

According to rule (4),

2.745 after rounding off becomes 2.74 as 4 is even number.

And

According to rule (5),

2.735 after rounding off becomes 2.74 as 3 is odd number.