Question

Given n(L) = 710, n(M) = 290 and n(L ∩ M) = 90, find n(L ∪ M).

Answer 1

Given:

n(L) = 710.

n(M) = 290

n(L ∩ M) = 90

The objective is to find n(L U M).

Step-by-step explanation:

The general formula to find the required term is,

`n(L\cup M)=n(L)+n(M)-n(L\cap M)`

On plugging the values in the above formula,

`\begin{gathered} n(L\cup M)=710+290-90 \\ =910 \end{gathered}`

Hence, the values of the required term is 910.