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1217

Q:

In each of the following, a series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
5, 30, 155, 780, ?

  • 1
    4000
  • 2
    3905
  • 3
    3900
  • 4
    3805
  • Show Answer
  • Workspace

Answer : 2. "3905"
Explanation :

5, 30, 155, 780, ?
The logic is 5*5+5=30, then 30*5+5=155, and so on we get 780*5+5=3905

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Reasoning Number Series Problems

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