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24-06-2021
Mathematics

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how can I solve it which method should I use please answer me !

how can I solve it which method should I use please answer me class=

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24-06-2021

7^1 last digit is 7
7^2 last digit is 9
7^3 last digit is 3
7^4 last digit is 1
7^5 last digit is 7
So it repeats every 4 times
190=47*4+2, so your desired answer is 9

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