Question

Unit digit of 11^1+12^2+13^3+14^4+15^5+16^6

Answer 1

For this you just need to focus on the number at units place. As whenever we take the power of a number the units place is decided by the numbers units place. Ex- 12^2=144 and 2^2=4 so the unit digit of our number deciding the unit place of our answer. So, the number in unit place for the following will be
11^1-1
12^2-4
13^3-9
14^4-16
15^5-25
16^6-36
So our answer will be found by adding these number (you can do it faster by just focusing on the numbers in the units place here as well. Also whenever the sum exceeds 10 just focus on the unit place number)
Hence the answer is 1

Answer 2

Answer:

answer is 1

I hope it help you