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Quantitative Aptitude

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Permutation, Combination & Probability

Question
12 out of 20
 

How many 3-digits number can be formed using 0,2,3,5,7 when Repetition are allowed?



A 40
B 28
C 120
D 24
E None of These

Ans. E

Place Acan be filled by 4 options as 0 can not be in that place. Place B and C can be filled by all 5 digit as repeation is allowed. Thus total 3 digit no. = 4x5x5 = 100

Permutation, Combination & Probability Flashcard List

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