17
Q:

Which Number would come in place of the underline mark in the series.

3, 9, 21, ___ , 93

A) 39 B) 45
C) 48 D) 51

Answer:   B) 45



Explanation:

First difference is 6 and second is 12. But if we take third as 18, then fourth difference will be 24. Then 93 can not be the last term.

So we have to take the difference as 6, 12, 24 and 48. 

So Answer is 21+24 = 45 

Subject: Number Series
Q:

Choose the missing terms out of the given alternatives ADVENTURE,DVENTURE, DVENTUR, ? , VENTU

A) VENTURE B) VENTUR
C) DVENT D) DVENTU
 
Answer & Explanation Answer: B) VENTUR

Explanation:

one of the letter from beginning and one of the letter from the end of a term are removed, one by one, alternate steps

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Filed Under: Number Series

22 6341
Q:

Choose the missing terms out of the given alternatives Y, B, T, G, O, ?

A) M B) N
C) K D) L
 
Answer & Explanation Answer: D) L

Explanation:

The given sequence is a combination of two series:
i.)Y,T, O and ii.)B, G, ?
i. consists of 2nd, 7th, 12th letters from end of English alphabet,while
ii. consists of 2nd, 7th, 12th letters from beginning of English alphabet
So, the missing letter in ii.) is the 12th letter from the beginning of English alphabet,which is L.

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Filed Under: Number Series

25 10099
Q:

Choose the missing terms out of the given alternatives Z, X, S, I, R, R, ?, ?

A) J, I B) K, M
C) G, I D) J, K
 
Answer & Explanation Answer: C) G, I

Explanation:

Z - 2 = X
X - 5 = S
S - 10 = I
I - 17 = R
R - 26 = R
R - 37 = G
G - 50 = I
The series 2, 5, 10, 17, 26, 37, 50 is obtained by the pattern +3, +5, +7, +9, . . . .

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Filed Under: Number Series

187 27623
Q:

Choose the missing terms out of the given alternatives T, R, P, N, L, ?, ?

A) K,I B) J, H
C) J, G D) K, H
 
Answer & Explanation Answer: B) J, H

Explanation:

T - 2 = R
R - 2 = P
P - 2 = N
N - 2 = L
L - 2 = J
J - 2 = H

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Filed Under: Number Series

35 9155
Q:

Find out the wrong term in the series 0, 2, 3, 5, 8, 10, 15, 18, 24, 26, 35

A) 18 B) 35
C) 24 D) 8
 
Answer & Explanation Answer: A) 18

Explanation:

The given sequence is a combination of two series:
i)0, 3, 8, 15, 24, 35
ii)2, 5, 10, 18, 26
The pattern in both i, ii is +3, +5, +7, . . . .
So, in ii) 18 is wrong and must be replaced by (10 + 7) = 17

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Filed Under: Number Series

63 13625
Q:

Find out the wrong term in the series 380, 188, 92, 48, 20, 8, 2

A) 20 B) 48
C) 92 D) 2
 
Answer & Explanation Answer: B) 48

Explanation:

The correct pattern is -192, -96, -48, -24, -12, -6
So, 48 is wrong and must be replaced by (92 - 48) = 44

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Filed Under: Number Series

50 10642
Q:

Find out the wrong term in the series 1, 5, 9, 15, 25, 37, 49

A) 15 B) 49
C) 25 D) 37
 
Answer & Explanation Answer: A) 15

Explanation:

The terms of the given series is 1*1, 2*2 + 1, 3*3, 4*4 +1, 5*5, 6*6 + 1, . . . . .
So, 15 is wrong and must be replaced by (4*4 + 1) = 17

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Filed Under: Number Series

42 14308
Q:

Find out the wrong term in the series 3, 4, 10, 32, 136, 685, 4116

A) 4116 B) 685
C) 136 D) 32
 
Answer & Explanation Answer: D) 32

Explanation:

The correct pattern is *1+1, *2+2, *3+3, *4+4, . . . . .
So,32 is wrong term and must be replaced by (10 * 3 + 3) = 33

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Filed Under: Number Series

20 7771