How many integers greater than 3000 can be formed with the digit 5 3 2 4 and 1 using each digit at m...........

Quantitative Aptitude (CDS) Permutation & Combination

How many integers greater than 3000 can be formed with the digit 5,3,2,4 and 1, using each digit at most once?

192

129

921

291

4 digit number greater than 3000
= 3×4×3×2
= 72
5 digit number = 5×4×3×2×1
= 120
Therefore , total integers greater than 3000
= 72 + 120
= 192

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