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Subtract 2.5 xx 10^(4) from 3.9 x 10^(5...

Subtract `2.5 xx 10^(4) ` from `3.9 x 10^(5)` and give the answer to correct number of significant figures.

Text Solution

Verified by Experts

The correct Answer is:
`3.6 xx 10^(5)`
`3.9 xx 10^(5) -2.5 xx 10^(4) = 3.9 xx 10^(5) - 0.25 xx 10^(5)`
`" "= 3.65 xx 10^(5) = 3.6 xx 10^(5) (2 SF)`
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