Question

2
17. The digit in unit's place of the number (1570)? +
(1571)² + (1572)2 + (1573)? is:
(b) 1 (c) 2
(a) 4
(d) 3​

Answer 1

Step-by-step explanation:

(1570)2 + (1571)2 + (1572)2 + (1573)2

unit digit → ↓ ↓ ↓ ↓

02 + 12 + 22 + 32

↓ ↓ ↓ ↓

0 + 1 + 4 + 9 = 14

unit digit = 4