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
Related Questions on Number System
Three numbers are in ratio 1 : 2 : 3 and HCF is 12. The numbers are:
A. 12, 24, 36
B. 11, 22, 33
C. 12, 24, 32
D. 5, 10, 15
Join The Discussion