## Quantitative Aptitude

Open Flashcards

### Number Systems and Ratio & Proportion

Question

**17 out of 30**

Which one of the following is not a prime number?

A | 31 |

B | 61 |

C | 71 |

D | 91 |

E | None of These |

**Ans. D**91 is multiple of 7 & 13

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Number Systems and Ratio & Proportion Flashcard List

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