Question

on a long street the houses are numbered in jumps of 6. that ism the first house has a street number 6, the second 12, and so on. What is the sum of the last digits of the street numbers of the 83rd, 84th, 85th, 86th, and 87th houses?

Answer 1

20

Answer 2

why?

Answer 3

83x6= 498 84x6=504 85x6=510 86x6=516 87x6=522
the last digit of each number is 8,4,0,6,2. Add them up, you get 20.