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# Logical Reasoning :: Number Series

Home > Logical Reasoning > Number Series > General Questions

31. Find the number that can be put in place of the question mark.
1337, 662, 331, 164, 81, 40,?

Explanation:

28*0.5=14
15*1.5=22.5
24.5*2.5=61.25
64.25*3.5=224.875.

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32. Find the number that can be put in place of the question mark.
3, 10, 101,?

Explanation:

2x2x1=4;
3x3x2=18;
4x4x3=48;
5x5x4=100;
6x6x5=180;
7x7x6=294;

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33. In the series 2, 6, 18, 54, ____ what will be the 8th term ?

Explanation:

3+7=10,8+4=12,0+5=5,so 3+2=5

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34. Find the number that can be put in place of the question mark.
125,80,45,20,?

Explanation:

25*5=125

20*4=80

15*3=45

10*2=20

5*1=5----> ANS

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35. Find the number that can be put in place of the question mark.
6, 13, 25, 51, 101, ?

Explanation:

6*2+1=13

13*2-1=25

25*2+1=51

51*2-1=101

101*2+1=203

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36. Find the number that can be put in place of the question mark.
1, 3, 4, 8, 15, 27, ?

Explanation:

Here is no explanation for this answer

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37. Which term of the series 5, 10, 20, 40, ____ is 1280?

Explanation:

Here is no explanation for this answer

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38. Find the number that can be put in place of the question mark.
198, 194, 185, 169, ?

Explanation:

Here is no explanation for this answer

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39. Find the number that can be put in place of the question mark.
1, 8, 27, 64, 125,____?

Explanation:

Here is no explanation for this answer

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40. Find the number that can be put in place of the question mark.
9, 27, 31, 155, 161, 1127, ?

Explanation:

The pattern is 9*3, 27+4, 31*5, 155+ 6, 161*7 = 1127
So, missing term = 1127 + 8 = 1135.

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