Write down the number of significant figures in the following .
(i)`0.007`
(ii)`2.64xx10^(24)`
(iii)`0.2370`
(iv)`6.320`
(v)`6.032`
(vi)`0.0006032`

Explanation

(i) `0.007` has one significant figure.
(ii) `2.64 xx 10^(24)` has three significant figures.
(iii) `0.2370` has four significant figures.
(iv) `6.320` has four significant figures,
(v) `6.032` has four significant figures.
(vi) `0.0006032` has four significant figures.