Pick up the unit digit of each number and multiply them;
0^2 in (1570)^2 = 0
1^2 in (1571)^2 = 1
2^2 in (1572)^2 = 4
3^2 in (1573)^2 = 9
On adding the unit digits, we will get,
0 1 4 9 = 14 (unit digit = 4)
So, on adding (1570)^2 (1571)^2 (1572)^2 (1573)^2, the unit digit will be 4.
answered Sep 07, 2023 at 09:12