Subject
Quantitative Aptitude
Topic
Permutation & Combination
How many numbers of four digit can be formed with the digits 0, 1, 2, 3 (repetition of digits is not allowed)?
How many numbers of four digit can be formed with the digits 0, 1, 2, 3 (repetition of digits is not allowed)?
ক)
18খ)
24গ)
64ঘ)
192ঙ)
256Explanation
First digit can be 1, 2, 3 only. (four digit number) Hence, 3 × 3 × 2 × 1 = 18 ways (with no digit repetition)Related questions
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