The digit in the unit place of the number represented by (7⁹⁵ - 3⁵⁸) is :

A. 0

B. 4

C. 6

D. 7

Answer: Option B

Solution(By Examveda Team)

Unit digit of 7⁴ is 1.
So, the unit digit of (7⁴)²³ is 1
∴ Unit digit of 7⁹⁵
= Unit digit of (7⁹² × 7³) = (1 × 3) = 3
Unit digit of 3⁴ is 1
So, the unit digit of (3⁴)¹⁴ is 1
∴ Unit digit of 3⁵⁸
= unit digit of (3⁵⁶ × 3² ) = (1 × 9) = 9
Hence, the unit digit of
(7⁹⁵ - 3) = (13 - 9) = 4