Series Completion Questions Answers

• 1. Complete the series 2,2,5, 13,28,....

  1. 50
  2. 51
  3. 52
  4. 53

   Answer And Explanation

  Answer: Option C

  Explanation:

  \begin{aligned}
  \text{Pattern is }\\
  +1^2-1, +2^2-1, +3^2-1,+4^2-1 \\
  5^2-1 = 28 + 24 \\
  = 52
  \end{aligned}

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

  1. 24
  2. 28
  3. 31
  4. 33

   Answer And Explanation

  Answer: Option B

  Explanation:

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

• 3. Complete the series, 1, 4, 9, 16, 25,....

  1. 36
  2. 38
  3. 49
  4. 52

   Answer And Explanation

  Answer: Option A

  Explanation:

  Series Pattern is +3, +5, +7, +9.
  
  So next number = 25+11 = 36

• 4. Complete the series
  20, 19, 17, ...., 10, 5

  1. 15
  2. 16
  3. 13
  4. 14

   Answer And Explanation

  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

• 5. 6, 11, 21, 36, 56, ? 
  what will replace the question mark in the series ?

  1. 75
  2. 81
  3. 85
  4. 89

   Answer And Explanation

  Answer: Option B

  Explanation:

  Pattern is +5, +10, + 15, +20
  
  Next number in the series will be 56 + 25 = 81

• 6. Complete the series
  1,6,13,22,33,...

  1. 46
  2. 48
  3. 49
  4. 51

   Answer And Explanation

  Answer: Option A

  Explanation:

  Pattern is +5, +7, +9, +11
  So next number will be +13
  => 33+13 = 46

• 7. Which fraction will come next, \begin{aligned} \frac{1}{2}, \frac{3}{4}, \frac{5}{8}, \frac{7}{16}, ? \end{aligned}

  1. \begin{aligned} \frac{11}{32} \end{aligned}
  2. \begin{aligned} \frac{9}{28} \end{aligned}
  3. \begin{aligned} \frac{9}{30} \end{aligned}
  4. \begin{aligned} \frac{9}{32} \end{aligned}

   Answer And Explanation

  Answer: Option D

  Explanation:

  Numerators of the fractions in the given sequence are getting increased by 2, i.e. 1+2,3+2,5+2, so next will be 7+2 = 9
  
  Denominators of the fractions in the series is getting doubled, 2*2 = 4, 4*2 = 8, 8*2 = 16, no next will be 16*2 = 32
  
  So resulting fraction will be
  \begin{aligned}
  \frac{9}{32}
  \end{aligned}

• 8. 1,9,17,33,49,73, ?

  1. 93
  2. 95
  3. 97
  4. 99

   Answer And Explanation

  Answer: Option C

  Explanation:

  Pattern for the given series is, +8, +8, +16, +16, +24
  
  So next will be +24, 73+24 = 97

• 9. 2,5,9,?,20,27, what will replace the question mark ?

  1. 13
  2. 14
  3. 15
  4. 16

   Answer And Explanation

  Answer: Option B

  Explanation:

  Pattern is +3,+4,..,..,+7, so +5 and +6 will be in the blanks
  
  Question mark will be replaced by 9+5 = 14

• 10. 21,25,33,49,81, ?

  1. 140
  2. 145
  3. 147
  4. 159

   Answer And Explanation

  Answer: Option B

  Explanation:

  Pattern is, +4, +8, +16, +32, so next will be +64
  81+64 = 145
•                                                                    
•                                      FOR MORE QUERY:- www.acmeentranceexpert.com
•                                                           CALL:- 9810513909