The digit in the unit's place of the product (2464)¹⁷⁹³ × (615)³¹⁷ × (131)⁴⁹¹ is :

A. 0

B. 2

C. 3

D. 5

Answer: Option A

Solution(By Examveda Team)

Unit digit in the given product = Unit digit in (4¹⁷⁹³ × 5³¹⁷ × 1⁴⁹¹)
Unit digit in 4² is 6 and so the unit digit in (4²)⁸⁹⁶ is 6
∴ Unit digit in 4¹⁷⁹³
= Unit digit in (6 × 4)
= unit digit in 24, which is 4
Unit digit in 5³¹⁷ is 5 and the unit digit in 1⁴⁹¹ is 1
∴ Unit digit in the given product = Unit digit in (4 × 5 × 1), which is 0