RRB Technician Grade I 19 Dec 2024 Shift 1 Paper

Concept:In multiplication, the final answer must have the same number of significant figures as the factor with the least number of significant figures.Explanation:Count the significant figures in each factor.$3.24$ has three significant figures: $3$, $2$, and $4$.$0.006$ has one significant figure: $6$. The leading zeros are not significant.The factor with the least number of significant figures is $0.006$, which has $1$ significant figure.Therefore, the product $3.24 \times 0.006$ should be rounded to $1$ significant figure.This rule keeps the precision of the result consistent with the least precise measurement.Answer:The result should have $1$ significant figure.Correct option: C. 1.