Question

The number of 5-digit odd numbers that can be made from number 12345 are:
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Answer 1

Answer:

5 digit odd numbers have asked.

so and the last number may be 5,1,3

for 5:

4*3*2*1=24 (without repetition of digits)

for 3:

4*3*2*! =24

for 1:

4*3*2*1=24

sum of these possiblities are =72

Answer 2

Answer:

Given digits are 1, 2, 3, 4, 5

The unit's placed can be filled by any one of 5 digits in 5 ways

similarly,

Ten's place can be filled in 5 ways

Hundred's place can be filled in 5 ways

Thousand's place can be filled in 5 ways

Ten thousand's place can be filled in 5 ways

Total number of 5 digits numbers formed

= 5 × 5 × 5 × 5 × 5

= 3125

I hope this answer help you