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# Number Series Questions

Home > Logical Reasoning > Number Series > General Questions
NA
SHSTTON
438
Solv. Corr.
145
Solv. In. Corr.
583
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0 M:38 S
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1 / 252

Look at this series: 36, 34, 30, 28, 24, ... What number should come next?

A20

B22

C23

D26

Explanation:

the first diffrence is of 2

and the second diffrence is of 4

and the sequence continues so 24-2=22

Workspace

NA
SHSTTON
459
Solv. Corr.
95
Solv. In. Corr.
554
Attempted
0 M:9 S
Avg. Time

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Look at this series: 80, 10, 70, 15, 60, ... What number should come next?

A20

B25

C30

D50

Explanation:

here 1,3,5............... terms are decreasing by 10

and 2,4,6,8................ are being increased by 5

so 6th term = 15 5=20;

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NA
SHSTTON
257
Solv. Corr.
268
Solv. In. Corr.
525
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1 M:16 S
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Find the number that can be put in place of the question mark. 3 12 7 26 15 b?

A64

B55

C45

D54

Explanation:

(Logic: 3*2+1=7 12*2+2=26
7*2+1=15 26*2+2=54)

Workspace

NA
SHSTTON
57
Solv. Corr.
356
Solv. In. Corr.
413
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3 M:17 S
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find the number that can be put in place of the question mark
5,6,?,87,412,2185.

A13

B14

C18

D20

Explanation:

series in the form of 5*1+1^3=6,6*2+2^3=20,20*3+3^3=87,87*4+4^3=412,412*5+5^3=125.

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NA
SHSTTON
148
Solv. Corr.
132
Solv. In. Corr.
280
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2 M:29 S
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find the number that can be put in place of the question mark.
1.25,3,7.1,1.50,1,8.1,1.75,-1,?

A8.1

B9.1

C9

D4

Explanation:

1.25+0.25=1.50+0.25=1.75
3-2=1-2=-1

Workspace

NA
SHSTTON
90
Solv. Corr.
192
Solv. In. Corr.
282
Attempted
2 M:19 S
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Find the number that can be put in place of the question mark.
3 7 14 23 36 49 ? 83 104

A66

B56

C110

D62

Explanation:

7-3=4 4*4=16 16-2=14
36-23=13 13*4=52 52-3=49
83-56=27 27*4=108 108-4=104

Workspace

NA
SHSTTON
160
Solv. Corr.
129
Solv. In. Corr.
289
Attempted
3 M:25 S
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Find the missing in the series: 70, 54, 45, 41,__.

A40

B37

C39

D33

Explanation:

70-54 = 16 = 4^2
54-45 = 9 = 3^2
45-41 = 4 = 2^2
41-40 = 1 = 1^2.

Workspace

NA
SHSTTON
181
Solv. Corr.
126
Solv. In. Corr.
307
Attempted
0 M:45 S
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Find the missing term of the series:-
2,5,10,17,?,41

A38

B41

C28

DNone of these

Explanation:

2+3=5, 5+5=10, 10+7=17,
So, the next prime number is 11
so,17+11=28.
and, 28+13=41

Workspace

NA
SHSTTON
112
Solv. Corr.
161
Solv. In. Corr.
273
Attempted
1 M:58 S
Avg. Time

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Find the next term of the series:-
7,14,55,110,?

A121

B115

C125

D120

Explanation:

7 + 7 = 14, and reverse of 14 is 41
Now, 41+14=55
Similarly,
Reverse of 55 is 55.
Thus, 55 +55=110.
Now, reverse of 110 is 011
so the next term is 110+011=121.

Workspace

NA
SHSTTON
93
Solv. Corr.
137
Solv. In. Corr.
230
Attempted
0 M:29 S
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Find the wrong number in the given series.
3, 4, 10, 32, 136, 685, 4116

A10

B32

C136

D4116

Explanation:

The sequence is as follows :

2nd term = (1st term 1) * 1

3rd term = (2nd term 1) * 2

4th term = (3rd term 1) * 3 and so on.

So, 32 is wrong and must be replaced by (10 1) * 3  i.e. 33.

Workspace

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