IIT-JEE Exam

Round off the following numbers to three
significant digits
(a) 15462
(b) 14.745
(c)14.750

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IIT-JEE Other Question

Evaluate 24.36 + 0.0623 + 256.2 In an experiment to determine acceleration
due to gravity by simple pendulum, a student
commit positive error in the measurement of
length and 3% negative error in the
measurement of time period. The percentage
error in the value of g will be-
(A) 7% (B) 10%
(C) 4% (D) 3%