Source: Extra Practice
According to the rules of rounding off, what are the values of and when rounded off to three significant figures?
Options
Option A is correct
and
Option B
and
Option C
and
Option D
and
Explanation
Under NCERT/CBSE guidelines, if the digit to be dropped is exactly 5, we look at the preceding digit. If the preceding digit is even, it is left unchanged; hence, becomes (since 4 is even). If the preceding digit is odd, it is increased by 1; hence, becomes (since 3 is odd).