Question

Number of ways of selection of at least one vowel and one consonant from the word TRIPLE are

• A. $65$
• B. $55$
• C. $45$
• D. $15$

Answer 1

The correct option is C $45$

We have $2$ vowels and $4$ consonants.

Now to choose at least $1$ vowels and $1$ consonant we have $(2^2-1)(2^4-1)$

$=45$ ways.

Hence, the answer is $45.$