Test: Number Series - 5


10 Questions MCQ Test IBPS Clerk Prelims - Study Material, Mock Tests | Test: Number Series - 5


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This mock test of Test: Number Series - 5 for LR helps you for every LR entrance exam. This contains 10 Multiple Choice Questions for LR Test: Number Series - 5 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Number Series - 5 quiz give you a good mix of easy questions and tough questions. LR students definitely take this Test: Number Series - 5 exercise for a better result in the exam. You can find other Test: Number Series - 5 extra questions, long questions & short questions for LR on EduRev as well by searching above.
QUESTION: 1

Look at this series: 2, 6, 18, 54, ... What number should come next?

Solution:
QUESTION: 2

Look at this series: 5.2, 4.8, 4.4, 4, ... What number should come next?

Solution:

In this simple subtraction series, each number decreases by 0.4.

QUESTION: 3

Look at this series: 4, 9, 19, 39, 79,... What number should come next?

Solution:

The pattern is 
4*2+1=9 
9*2+1=19 
19*2+1=39 
39*2+1=79 
79*2+1=159 
 

QUESTION: 4

Look at this series: 2, 4, 6, 8, 10, ... What number should come next?

Solution:
QUESTION: 5

Look at this series: 1.5, 2.3, 3.1, 3.9, ... What number should come next?

Solution:
QUESTION: 6

Look at this series: 14, 28, 20, 40, 32, 64, ... What number should come next?

Solution:

The series is 14, 28, 20, 40, 32, 64
Take three terms at a time. The notation be as follows:-
Let, First term = a = 14
It is evident that Second term= 2*a = 2 * 14 = 28 and,
The Third term = Second term - 8 OR ( 2*a - 8 ) = 28 - 8 = 20
Now consider the third, fourth and the fifth term.
Let, Third term = a = 20
It is evident that Fourth term= 2*a = 2 * 20 = 40 and,
The Fifth term = Second term - 8 OR ( 2*a - 8 ) = 40 - 8 = 32
Similarly consider fifth, sixth and the seventh(term to be found).
Let, Fifth term = a = 32
It is evident that Sixth term = 2*a = 2 * 32 = 64 and,
The Seventh term ( term to calculated) = Second term - 8 OR ( 2*a - 8 ) = 64 - 8 = 56
 

QUESTION: 7

Look at this series: 201, 202, 204, 207, ... What number should come next?

Solution:

In this addition series, 1 is added to the first number; 2 is added to the second number; 3 is added to the third number; 4 is added to the fourth number; and go on.

QUESTION: 8

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

Solution:

This is an alternating addition and subtraction series. In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next.

QUESTION: 9

Look at this series: 544, 509, 474, 439, ... What number should come next?

Solution:

This is a simple subtraction series.
Each number is 35 less than the previous number.
(544 - 35 = 509) (509 - 35 = 474) (474 - 35 = 439) (439 - 35 = 404)...

QUESTION: 10

Look at this series: 8, 6, 9, 23, 87 , ... What number should come next?

Solution:

8 x 1 - 2 = 6
6 x 2 - 3 = 9
9 x 3 - 4 = 23
23 x 4 - 5 = 87
87 x 5 - 6 = 429

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