Question

what will be the unit digit of the square of the following numbers(i)39 (ii) 297 (i)5125 (iv)7286 (v)8742​

Answer 1

question:

what will be the unit digit of the square of the following numbers(i)39 (ii) 297 (i)5125 (iv)7286 (v)8742

solution:

1)39=1521

units digit =1

2)297=88209

units digit= 9

3)5125= 26265625

units digit=5

4)7286= 53085796

units digit= 6

5) 8742=76422564

units digit= 4