Question Detail

21,25,33,49,81, ?

  • 140
  • 145
  • 147
  • 159

Answer: Option B

Explanation:

Pattern is, +4, +8, +16, +32, so next will be +64
81+64 = 145
Similar Questions :

1. 1,2,6,24, ?

  • 110
  • 118
  • 120
  • 122

Answer: Option C

Explanation:

Pattern is *2, *3, *4
So next number is the series will be *5
24*5 = 120

2. 36, 34, 30, 28, 24, ... What number should come next?

  • 22
  • 20
  • 18
  • 16

Answer: Option A

Explanation:

Pattern in the series is, -2, -4, -2, -4. So next term will be -2
24 -2 = 22

3. Which number would replace the question mark in series
7,12,19,?,39

  • 24
  • 28
  • 31
  • 33

Answer: Option B

Explanation:

Pattern is , +5, +7, +9
Missing Number = 19+9 = 28

4. 1, 2, 5, 12, 27, 58, 121, ?

  • 248
  • 244
  • 198
  • 190

Answer: Option A

Explanation:

Pattern in the series is *2+1, *2+2, *2+3,.....

Term which replaces the question mark in the series is
121 * 2 + 6 = 248

5. 8, 9, 8, 7, 10, 9, 6, 11, 10, (...), 12

  • 7
  • 6
  • 5
  • 4

Answer: Option C

Explanation:

Please note that above sequence is containing 3 series
Series 1 : 8, 7, 6, (..)
Series 2 : 9, 10, 11, 12
Series 3 : 8, 9, 10

In series 1 pattern is -1. So missing term will be 6-1 = 5

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