Practice Test: Number Series- 2 - UPSC MCQ

# Practice Test: Number Series- 2 - UPSC MCQ

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## 10 Questions MCQ Test CSAT Preparation - Practice Test: Number Series- 2

Practice Test: Number Series- 2 for UPSC 2024 is part of CSAT Preparation preparation. The Practice Test: Number Series- 2 questions and answers have been prepared according to the UPSC exam syllabus.The Practice Test: Number Series- 2 MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Practice Test: Number Series- 2 below.
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Practice Test: Number Series- 2 - Question 1

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

Detailed Solution for Practice Test: Number Series- 2 - Question 1

In this simple addition series, each number increases by 0.8.
Next number will be 4.7

Practice Test: Number Series- 2 - Question 2

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

Detailed Solution for Practice Test: Number Series- 2 - Question 2

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

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Practice Test: Number Series- 2 - Question 3

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

Detailed Solution for Practice Test: Number Series- 2 - Question 3

Each number increases by 2.
Like -
First number is 2
Second number = 2 + 2 =4
Third number = 4 + 2 = 6
Fourth number = 6 + 2 = 8
Fifth number = 8 + 2 = 10  and
Sixth number = 10 + 2 = 12
Hence, The answer is (b) 12.

Practice Test: Number Series- 2 - Question 4

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

Detailed Solution for Practice Test: Number Series- 2 - Question 4

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.

Practice Test: Number Series- 2 - Question 5

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

Detailed Solution for Practice Test: Number Series- 2 - Question 5

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)...

Practice Test: Number Series- 2 - Question 6

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

Detailed Solution for Practice Test: Number Series- 2 - Question 6

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.

Practice Test: Number Series- 2 - Question 7

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

Detailed Solution for Practice Test: Number Series- 2 - Question 7

2*3 = 6
6*3 = 18
18*3 = 54
54*3 = 162

Practice Test: Number Series- 2 - Question 8

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

Detailed Solution for Practice Test: Number Series- 2 - Question 8

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

Practice Test: Number Series- 2 - Question 9

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

Detailed Solution for Practice Test: Number Series- 2 - Question 9

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

Practice Test: Number Series- 2 - Question 10

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

Detailed Solution for Practice Test: Number Series- 2 - Question 10

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

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214 videos|139 docs|151 tests