Add `2.384xx10^(-4) to 1.7xx10^(-5)` and express the result to correct number of significant figures.

Answer

`1.9xx10^5`

Explanation

`2.384xx10^(-4)+1.7xx10^(-5)`
`=10^(-5)[0.2384 +1.7] = 1.9384xx10^(-5)`
Rounding off to one place of decimal :
`sum = 1.9xx10^(-5)`