Question

EXERCISE 6.1 oz
1. Write the unit's digits of the square of the following numbers
(a) 93
(b) 72
(d) 729
(e)5430 for example​

Answer 1

(a) 9
(b) 4
(c) 1
(d) 0
Just multiply the unit digit by itself and whatever is the answer is the unit digit

93 3 is the unit digit so multiply 3*3 and answer is 9 so that’s the unit digit of 93
So u simply have to multiply the unit digit by itself