Home
Class 11
MATHS
Count the number of three - digit numbe...

Count the number of three - digit numbers which can be formed from the digits 2,4,6,8, if
(i) repetitions of digits is allowed ?
(ii) repetitions of digits is not allowed ?

Text Solution

Verified by Experts

The correct Answer is:
(i) 125, (ii) 60.
Promotional Banner

Topper's Solved these Questions

  • PERMUTATIONS AND COMBINATIONS

    NCERT TAMIL|Exercise EXERCISE 7.2|7 Videos

  • PERMUTATIONS AND COMBINATIONS

    NCERT TAMIL|Exercise EXERCISE 7.3|12 Videos

  • PERMUTATIONS AND COMBINATIONS

    NCERT TAMIL|Exercise Miscellaneous Exercise on Chapter 7|11 Videos

  • MATRICES AND DETERMINANTS

    NCERT TAMIL|Exercise EXERCISE 7.5|25 Videos

  • PRINCIPLE OF MATHEMATICAL INDUCTION

    NCERT TAMIL|Exercise EXERCISE - 4.1|22 Videos

Similar Questions

Explore conceptually related problems

How many three-digit odd numbers can be formed by using the digits 0,1,2,3,4,5 ? If (i) the repetition of digits is not allowed (ii) the repetition of digits is allowed

How many three- digit numbers, which are divisible by 5, can be formed using the digits 0,1,2,3,4, 5 if (i) repetition of digits are not allowed ? (ii) repetition of digits are allowed ?

How many 4-digit numbers can be formed by using the digits 1 to 9 if repetition of digits is not allowed?

How many six-digit odd numbers, greater than 6,00,000, can be formed from the digits 5, 6, 7, 8, 9, and 0 if repetition of digits is allowed repetition of digits is not allowed.

How many different numbers of six digits can be formed from the digits 0,4, 5,7, 8, 9 with , repetition of digits is not allowed.

How many numbers are there between 100 and 500 with the digits 0,2,3,4,5 if (i) repetition of digits allowed (ii) the repetition of digits is not allowed