How many significant figures should be present in the answer of the following calculations?
(1) `(0.02856xx298.15xx0.112)/(0.5785)`
(2) `5xx5.364`
(3) `0.0125+0.7864+0.0215`

Explanation

(1) In the given problem, the least figure (0.112) has 3 significant figures. Therefore, the answer should have three significant figures.
(2) Leaving the whole no. (5), the second figure (5.364) has 4 significannt figures. Hence, the answer should have 4 significant figures.
(3) Here, the least number of decimal places in the term is 4. hence, the answer should have 4 significannt figures.