Q. The number of significant figures in all the given numbers $25.12,\ 2009,\ 4.156$ and $1.217 \times 10^{- 4}$ is
A) $1$
B) $2$
C) $3$
D) $4$
Explanation
The number of significant figures in all of the given number is $4$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.