Question Detail

What number should come next in the series, 1, 2, 3, 5, 8, ?

  • 17
  • 12
  • 9
  • 13

Answer: Option D

Explanation:

In this series, each term is the sum of preceding two terms as,
1+2 = 3
3+2 = 5
5+3 = 8
Next term in the series will be,
8+5 = 13

Similar Questions :

1. 8, 10, 14, 18, (...), 34, 50, 66

  • 20
  • 24
  • 26
  • 28

Answer: Option C

Explanation:

Patten is +2, +4, +4, .., .., +16, +16

Missing number will be 18+8 = 26

2. 5, 9, 17, 29, 45, ... ?

  • 58
  • 64
  • 65
  • 80

Answer: Option C

Explanation:

Pattern in the series is +4, +8, +12, +16.
Next term will be 45 + 20 = 65

3. Complete the series
20, 19, 17, ...., 10, 5

  • 15
  • 16
  • 13
  • 14

Answer: Option D

Explanation:

Pattern is, -1, -2, ..,.. , -5

So -3 and -4 will fill the blanks to make it a pattern.

Next number will be 17-3 = 14

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

  • 25
  • 26
  • 27
  • 28

Answer: Option A

Explanation:

Please look carefully at the series, its pattern is,
-1, +2, -1, +2, -1, so next will be +2
23+2 = 25

5. 1,6,15,(...),45,66,91

  • 26
  • 28
  • 29
  • 34

Answer: Option B

Explanation:

Pattern in the series is, +5, +9, .., .., +21, +25
So 4 is getting increased at every term addition.
Missing term in the series will be 15+(9+4)
= 15+13 = 28

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