How many five digit numbers contain no repeated digits, have no even digits, and the sum...

Question

Question

How many five digit numbers contain no repeated digits, have no even digits, and the sum of their digits is 25?

Answer 1

Answer #1

as there are 5 odd digits 1,3,5,7,9 with no repeated digits and sum is 25

number of ways to arrange them =5! =5*4*3*2*1 =120

therefore number of five digit numbers contain no repeated digits, have no even digits, and the sum of their digits is 25 =120

Answer 2

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