Question

Show that
${1}^{99} + {2}^{99} + {3}^{99} + {4}^{99} + {5}^{99}$
is divisible by 5

Answer 1

coz after adding all this we will se that the ones place is eithrr 5 or 0
so divisible by 5

Answer 2

Answer: 1^99 =1

2^99= ........8

3^99=..........7

4^99=.......4

5^99=.....5

adding all them we get oncd place as 5