### Q.31:- How many significant figures should be present in the answer of the following calculations?

(i) 0.02856×298.15×0.112/0.5785

(ii) 5 × 5.364

(iii) 0.0125 + 0.7864 + 0.0215

**Answer:-**(i) Least precise term i.e. 0.112 is having 3 significant digits.

∴ There will be 3 significant figures in the calculation.

(ii) 5.364 is having 4 significant figures.

∴ There will be 4 significant figures in the calculation.

(iii) Least number of decimal places in each term is 4.

∴ There will be 4 significant figures in the calculation.