Question

Which set of figures will be obtained after rounding up the following up to three significant figures?
$34.216,0.04597,10.4107$

• A. $34.3,0.0461,10.4$
• B. $34.2,0.0460,10.4$
• C. $34.20,0.460,10.40$
• D. $34.21,4.597,1.04$

Answer 1

Answer: (B)

To round up a given number, ignore the last digit as such if the digit next to it is less than $5$. Then increase it by $1$, if the next digit is greater than $5$.
(i) $34.216$
$34.22\{$ since next digit $(6)$ is greater than $5\}$
$34.2\{$ since next digit $(2)$ is less than $5\}$
(ii) $0.04597$
$0.0460\{$ since next digit $(7)$ is greater than $5\}$
(iii) $10.4107$
$10.411\{$ since next digit $(7)$ is greater than $5\}$
$10.41\{$ since next digit $(1)$ is less than $5\}$
$10.4\{$ since next digit $(1)$ is less than $5\}$