Which of the following is prime number
(i) 117 (ii) 171 (iii) 179 (iv) 125
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Answer:
3)179 is a prime number
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179 is a prime number coz according to the divisibility rule:-
1+1+7= 9 which is divisible by 3
1+7+1=9 again divisible by 3
1+7+9=17 which is a prime number
125 which is divisible by 5
Hope it helps u!!....
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