What is the unit digit in (6324) 1797 Ã— (615) 316 Ã— (341) 476 ? Options: A . &nbsp1 B . &nbsp2 C . &nbsp4 D . &nbsp0

Answer: Option D Answer : Option D Explanation : Unit digit in (6324) 1797 = Unit digit in (4) 1797 = Unit digit in [(4 2 ) 898 Ã— 4] = Unit digit in [16 898 Ã— 4] = Unit digit in (6 Ã— 4) = 4 Unit digit in (615) 316 = Unit digit in (5) 316 = 5 Unit digit in (341) 476 = Unit digit in (1) 476 = 1 Hence, unit digit in (6324) 1797 Ã— (625) 316 Ã— (341) 476 = Unit digit in [4 Ã— 5 Ã— 1] = 0

What is the unit digi

Question

What is the unit digit in (6324)¹⁷⁹⁷ Ã— (615)³¹⁶ Ã— (341)⁴⁷⁶ ?

Options:

A . 1

B . 2

C . 4

D . 0

Answer: Option D

Answer : Option D

Explanation :

Unit digit in (6324)¹⁷⁹⁷ = Unit digit in (4)¹⁷⁹⁷ = Unit digit in [(4²)⁸⁹⁸ Ã— 4]
= Unit digit in [16⁸⁹⁸ Ã— 4] = Unit digit in (6 Ã— 4) = 4
Unit digit in (615)³¹⁶ = Unit digit in (5)³¹⁶ = 5
Unit digit in (341)⁴⁷⁶ = Unit digit in (1)⁴⁷⁶ = 1
Hence, unit digit in (6324)¹⁷⁹⁷ Ã— (625)³¹⁶ Ã— (341)⁴⁷⁶ = Unit digit in [4 Ã— 5 Ã— 1] = 0