3, 15,?, 63, 99, 143 27 35 45 56 The given series is in the pattern (22

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Home ‣ Verbal Reasoning ‣ Number Series Comments

Question
3, 15,?, 63, 99, 143
Options
A. 27
B. 35
C. 45
D. 56

Correct Answer

35

Explanation

The given series is in the pattern (2² - 1), (4² - 1),............ (8² - 1), (10² - 1), (12² - 1). So, the missing term is (6² - 1) = 35

Number Series problems

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1.
6, 13, 28, 59,?
Options
A. 111
B. 113
C. 114
D. 122

Discuss

Correct Answer: 122

Explanation:

the given series is in the pattern x 2 + 1, x 2 + 2, x 2 + 3,............
So, the missing term = 59 x 2 +4 = 122

2.
1, 1, 2, 6, 24,?, 720
Options
A. 100
B. 104
C. 108
D. 120

Discuss

Correct Answer: 120

Explanation:

The given series is the pattern x1, x2, x3, x4, .............
so, the missing term = 24 x 5 = 120

3.
1, 5, 13, 25, 41,?
Options
A. 51
B. 57
C. 61
D. 63

Discuss

Correct Answer: 61

Explanation:

The given series is in pattern + 4, + 8, + 12, + 16, ...............
So, the missing term = 41 + 20 = 61

4. Find the odd one out:
Options
A. 210
B. 529
C. 289
D. 196

Discuss

Correct Answer: 196

Explanation:

All number are not a perfect square except option (d), which is a perfect square of 14³ = 196.

5. Find the odd one out:
Options
A. Langur
B. Whale
C. Scarab
D. Donkey

Discuss

Correct Answer: Scarab

Explanation:

Except option (c) all are mammal whereas scarab is an insect.

6.
5760, 960,?, 48, 16, 8
Options
A. 120
B. 160
C. 192
D. 240

Discuss

Correct Answer: 192

Explanation:

The given series is in pattern � 6, � 5, � 4, � 3, � 2. So the missing term is 960 � 5 = 192

7.
12, 15, 19, 24,?
Options
A. 28
B. 27
C. 30
D. 32

Discuss

Correct Answer: 30

Explanation:

The difference between the numbers increases by 1.

8.
72, 63, 54, 45, ...?......
Options
A. 36
B. 81
C. 27
D. 90

Discuss

Correct Answer: 36

Explanation:

The gap is of -9

9.
8, 64, 216, 516, 512, 1000, 1728,?
Options
A. 4096
B. 2744
C. 3375
D. 2197

Discuss

Correct Answer: 2744

Explanation:

Series is 2³ , 4³ , 6³ , 8³ , 10³ , 12³ , ....
Then, ? = 14³ = 2744

10.
81, 512, 2401, 7776, 15625, 16384,?
Options
A. 2187
B. 19683
C. 729
D. 512

Discuss

Correct Answer:

Explanation:

Option (e) Series is 9² , 8³ , 7⁴ , 6⁵ , 5⁶ , 4⁷ , 3⁸
? = 3⁸ , = 6561

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