Series Completion Questions Answers
1. Complete the series 2,2,5, 13,28,....
- 50
- 51
- 52
- 53
Answer And Explanation
Answer: Option C\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- 24
- 28
- 31
- 33
4. Complete the series
20, 19, 17, ...., 10, 5- 15
- 16
- 13
- 14
Answer And Explanation
Answer: Option DExplanation:Pattern is, -1, -2, ..,.. , -5
So -3 and -4 will fill the blanks to make it a pattern.
Next number will be 17-3 = 145. 6, 11, 21, 36, 56, ?
what will replace the question mark in the series ?- 75
- 81
- 85
- 89
Answer And Explanation
Answer: Option BExplanation:7. Which fraction will come next, \begin{aligned} \frac{1}{2}, \frac{3}{4}, \frac{5}{8}, \frac{7}{16}, ? \end{aligned}
- \begin{aligned} \frac{11}{32} \end{aligned}
- \begin{aligned} \frac{9}{28} \end{aligned}
- \begin{aligned} \frac{9}{30} \end{aligned}
- \begin{aligned} \frac{9}{32} \end{aligned}
Answer And Explanation
Answer: Option DNumerators 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}
9. 2,5,9,?,20,27, what will replace the question mark ?
- 13
- 14
- 15
- 16
Answer And Explanation
Answer: Option BPattern is +3,+4,..,..,+7, so +5 and +6 will be in the blanks
Question mark will be replaced by 9+5 = 14
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