Question
A three-letter word is to be formed using the English
alphabet where the first letter is a vowel, the second letter is a vowel different from the first, and the third letter is a consonant. How many such words can be formed?Solution
ATQ, Number of ways to choose the first letter (vowel) 5C1 =5 Number of ways to choose the second letter (Different vowel) = 4C1 = 4 Number of ways to choose the third letter (consonant) = 21C1 = 21 Hence total number of ways = 5 × 4 × 21 = 420 ways
More Permutation and combination Questions
- Find the wrong number in the given number series.
10, 19, 3, 28, 5, 54 42, 50, 59, 123, 148, 360
Find the wrong number in the given number series.
1900, 1171, 669, 316, 100, - 25
Find the wrong number in the given number series.
1024, 256, 64, 32, 4, 1- Find the wrong number in the given number series.
3, 6, 12, 24, 60, 96 Find the wrong number in given number series.
4350, 4400, 4600, 4750, 5150, 5450
- Find the wrong number in the given number series.
10, 13, 17, 24, 31, 41 Find the wrong number in the given number series,
31, 55, 91, 145, 217, 307
- Find the wrong number in the given number series.
5, 11, 21, 41, 65, 95 16, 16, 32, 128, 1024, 16384
Relevant for Exams:
