The digit in unit's place of the number (1570)2 + (1571)2 + (1572)2 + (1573)2 is :
A. 4
B. 1
C. 2
D. 3
Answer: Option A
Solution (By Examveda Team)
| (1570)2 | + | (1571)2 | + | (1572)2 | + | (1573)2 | |
| unit digit → | ↓ | ↓ | ↓ | ↓ | |||
| 02 | + | 12 | + | 22 | + | 32 | |
| ↓ | ↓ | ↓ | ↓ | ||||
| 0 | + | 1 | + | 4 | + | 9 = 14 |
unit digit = 4
This Question Belongs to Arithmetic Ability >> Number System
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