The unit digit of (316)34n + 1 is :
A. 4
B. 5
C. 1
D. 7
Answer: Option D
Solution (By Examveda Team)
The unit digit of (316)34n, depends on the power of 6.See the pattern, 62 = 36
63 = 216
64 = 1296
Any power of 6 will give unit digit 6. So
The unit digit of (316)34n always 6.
So, unit digit of (316)34n + 1 will be 7
This Question Belongs to Arithmetic Ability >> Number System
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