### Exercise :: Series Completion - Section 1

- Series Completion - Section 1
- Series Completion - Section 2
- Series Completion - Section 3
- Series Completion - Section 4
- Series Completion - Section 5

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.

1. | 120, 99, 80, 63, 48, ? |
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Answer: Option A Explanation: The pattern is - 21, - 19, - 17, - 15,..... So, missing term = 48 - 13 = 35. |

2. | 589654237, 89654237, 8965423, 965423, ? |
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Answer: Option D Explanation: The digits are removed one by one from the beginning and the end in order alternately so as to obtain the subsequent terms of the series. |

3. | 3, 10, 101,? |
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Answer: Option C Explanation: Each term in the series is obtained by adding 1 to the square of the preceding term. So, missing term = (101) |

4. | In the series 2, 6, 18, 54, ...... what will be the 8th term ? |
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Answer: Option B Explanation: Clearly, 2 x 3 = 6, 6 x 3 = 18, 18 x 3 = 54,..... So, the series is a G.P. in which a = 2, r = 3. Therefore 8th term = ar |

5. | 125,80,45,20,? |
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Answer: Option A Explanation: The pattern is - 45, - 35, - 25, ..... So, missing term = 20 - 15 = 5. |