Math, asked by jayapandian, 1 year ago

what is the unit digit in 7^105

Answers

Answered by ignitedlearner

here we can see that

(7)¹ = 7

7² = 49

7³ = 343

7⁴ = 2401

7^5 = 16807

unit digit is repeating after every four power

thus 105/4

remainder = 1

thus unit digit will be 7

7^105 = 54361846697263307560529495055267343940077014163990039113495978834700158362117849904436807

jayapandian: Thank you,Sir.

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