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Question

What comes next in the sequence?
1, 5, 9, 13, 17,21, 25,___


  1. 23

  2. 27
     

  3. 30
     

  4. 29 


Solution

The correct option is D

29 


Let us calculate the difference between consecutive terms in the given sequence:

  • 5 - 1 = 4
  • 9 - 5 = 4
  • 13 - 9 = 4
  • 17 - 13 = 4 
  • 21 - 17 = 4
  • 25 - 21 = 4

We observe that the difference between two consecutive terms is 4. So, we need to add 4 to the last term to obtain the next term.

So the next number in the sequence = 25 + 4 = 29.

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