Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • A password consists of 4 letters, where each letter can be either a vowel (a, e, i, o, u) or a consonant. However, the last letter must be a vowel. How many different pas

A password consists of 4 letters, where each letter can be either a vowel (a, e, i, o, u) or a consonant. However, the last letter must be a vowel. How many different passwords are possible?

 

Option: 1

40


Option: 2

14


Option: 3

28


Option: 4

56


Answers (1)

best_answer

The first three positions can be filled with either a vowel or a consonant, so there are 2 options for each position. Since there are three such positions, the number of possible combinations for the first three letters is 2 \times 2 \times 2=8

The last position must be a vowel, so there are 5 options for it.

To find the total number of possible passwords, we multiply the number of options for each position: 8 \times 5=40 \text {. }

Therefore, there are 40 different passwords possible.

 

Posted by

Rishabh

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2026: IIT Delhi’s CSE, EE most opted; last 2 year’s closing ranks for all categories
anam-khan

Must provide CBSE 11th registration numbers to JEE Mains aspirants, board tells schools
anam-khan

JEE Main 2026: Engineering at NIT Surathkal tougher for insiders, show BTech cut-offs

Latest Question