Question 1069247
1) {{{5^5}}} = 3125
2) The unit digit should be 1, 3, 5
No. of ways to fill the unit digit = 3
No. of ways to fill the remaining 4 places = 4! = 24
3 x 24 = 72

3) Leftmost digit should be 3, 4 or 5
No. of ways to fill the leftmost digit = 3
No. of ways to fill the remaining 4 places = 4! = 24
3 x 24 = 72

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