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प्रश्न
Which of the following is a prime number?
विकल्प
117
171
179
none of these
MCQ
योग
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उत्तर
179
117 is not a prime number because 117 can be written as 3 × 39.
171 is not a prime number because 171 can be written as 19×9.
179 is a prime number.
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