# Number Series

## Number Series

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Question 1 |

Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next?

7 | |

10 | |

12 | |

13 |

Question 1 Explanation:

This is a simple alternating addition and subtraction series. In the first pattern, 3 is added; in the second, 2 is subtracted.

Question 2 |

Look at this series: 36, 34, 30, 28, 24, ... What number should come next?

20 | |

22 | |

23 | |

26 |

Question 2 Explanation:

This is an alternating number subtraction series. First, 2 is subtracted, then 4, then 2, and so on.

Question 3 |

Look at this series: 22, 21, 23, 22, 24, 23, ... What number should come next?

22 | |

24 | |

25 | |

26 |

Question 3 Explanation:

In this simple alternating subtraction and addition series; 1 is subtracted, then 2 is added, and so on.

Question 4 |

Look at this series: 53, 53, 40, 40, 27, 27, ... What number should come next?

12 | |

14 | |

27 | |

53 |

Question 4 Explanation:

In this series, each number is repeated, then 13 is subtracted to arrive at the next number.

Question 5 |

Look at this series: 21, 9, 21, 11, 21, 13, 21, ... What number should come next?

14 | |

15 | |

21 | |

23 |

Question 5 Explanation:

In this alternating repetition series, the random number 21 is interpolated every other number into an otherwise simple addition series that increases by 2, beginning with the number 9.

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There are 5 questions to complete.

In question 2, if you subtract 2 or 4 from 24, neither case obtain 23

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