Which of the following numbers is prime? a) 117 b)147 c) 159 d) 149
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117 is divisible by 1,3,9,13,39,117
147 is divisible by 1,3,7,21,49,147
159 is divisible by 1,3,53,159
149 is a prime number as it is divisible only by 1 an 149
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d) 149 is the answer
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