Question

find n(A) for the following set A:{x : x is a letter in the word "nonintervention"} n(A) = _________

Answer 1

Given,

{x : x is a letter in the word "nonintervention"}

A={x : x is a letter in the word "nonintervention"}

The roster form of the set is,

A={e, i, n, o, v, t, r}

The number of elements in the set A is,

n(A)=7

Hence, the number of elements in the set A is 7.