Any point on the y-axis has its absissa x=0
So find the point
Let's say you have a number N, that ends in a number X. N=AB...WX. Then N=10*(AB...W)+X.What is the last digit in the expansion of 3 to the power of 100. The calculator says the answer to this is 7, but I need to show how I got the answer.
See the pattern ?