NIMCET 2013 Question Paper with solutions

Question : 37 of 120

Marks: +1, -0

The total number of numbers that can be formed using the digits 3, 5 and 7 only if no repetitions are allowed, is:

Solution:

Single digit number = 3
Two digit numbers are

3×2=6

Three digit numbers are

3×2×1=6

Hence, total numbers are 15

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