Math, asked by guptajanhvi54, 1 month ago

the last two digit of 7⁷⁷ is

Answers

Answered by 12thpáìn

2

it will be same as that of 7⁷⁷

now cyclicity of last digit in powers of 7 is 4 like

7¹ = 7

7² = 49

7³ = 343

7⁴ = 2401

7⁵ = 16807

7⁶ = 117649

7⁷ = 823543

7⁸ = 5764801

so last digit of 7⁷⁷ will be 7

As 7776 is divisible by 4 so its( 7⁷⁷ ) last digit will be 1 so next power will have last digit 7.

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