Insert the missing number.

7, 26, 63, 124, 215, 342, (....)

A) 391 | B) 421 |

C) 481 | D) 511 |

Explanation:

Numbers are (2^{3} - 1), (3^{3} - 1), (4^{3} - 1), (5^{3} - 1), (6^{3} - 1), (7^{3} - 1) etc.

So, the next number is (8^{3} - 1) = (512 - 1) = 511.

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Subject: Odd Man Out and Series - Quantitative Aptitude - Arithmetic Ability

Insert the missing number.

8, 7, 11, 12, 14, 17, 17, 22, (....)

A) 20 | B) 22 |

C) 24 | D) 27 |

Explanation:

There are two series (8, 11, 14, 17, 20) and (7, 12, 17, 22) increasing by 3 and 5 respectively.

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Subject: Odd Man Out and Series - Quantitative Aptitude - Arithmetic Ability

Find the odd man out?

396, 462, 572, 427, 671, 264.

A) 671 | B) 462 |

C) 427 | D) 264 |

Explanation:

In each number except 427, the middle digit is the sum of other two.

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Subject: Odd Man Out and Series - Quantitative Aptitude - Arithmetic Ability

Find out the wrong number in the given sequence of numbers.

1, 2, 6, 15, 31, 56, 91

A) 31 | B) 91 |

C) 56 | D) 15 |

Explanation:

1, 1 + 1^{2} = 2, 2 + 2^{2} = 6, 6 + 3^{2} = 15, 15 + 4^{2} = 31, 31 + 5^{2} = 56, 56 + 6^{2} = 92

Last number of given series must be 92 not 91.

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Subject: Odd Man Out and Series - Quantitative Aptitude - Arithmetic Ability

Find the odd man out.

2, 5, 10, 17, 26, 37, 50, 64

A) 50 | B) 37 |

C) 26 | D) 64 |

Explanation:

(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1

But, 64 is out of pattern.

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Subject: Odd Man Out and Series - Quantitative Aptitude - Arithmetic Ability