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Q:

If the standard deviation of a population is 3, what would be the population variance?

 

A) 9 B) 6
C) 8 D) 15
 
Answer & Explanation Answer: A) 9

Explanation:
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Filed Under: Probability
Exam Prep: Bank Exams

10 23308
Q:

In a row, Kumar is at 7th place from the left and Pawan is at 9th place from the right. When they interchange the positions Kumar becomes 11th from left. How many were seated in the row ?

A) 19 B) 20
C) 21 D) 27
 
Answer & Explanation Answer: A) 19

Explanation:

Initialy from left 7th = kumar
from right 9th = pawan
Interchange kumar = 11th from left, from right kumar = 9th;
11+8 = 19;
8 is 1,2,3,4,5,6,7(pawan),8,9,10,11(kumar),12,13,14,15,16,17,18,19;
simply count the 9th place from right we will get total as 19.

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Filed Under: Number, Ranking and Time Sequence Test
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Bank Clerk , Bank PO

35 23279
Q:

In the following question, one term in the number series is wrong. Find out the wrong term?

5, 10, 40, 80, 320, 550, 2560

A) 80 B) 320
C) 550 D) 2560
 
Answer & Explanation Answer: C) 550

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Filed Under: Number Series
Exam Prep: Bank Exams

0 23276
Q:

What is the measure of an interior angle of a regular polygon of 8 sides?

 

A) 140 B) 144
C) 135 D) 150
 
Answer & Explanation Answer: C) 135

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

1 23273
Q:

Identify the diagram that best represents the relationship among the given classes.

Urban people, Educated, Hard-working

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

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Filed Under: Logical Venn Diagram
Exam Prep: Bank Exams

3 23272
Q:

If a mirror is placed on the line MN, then which is the right image of the given figure?

 

 

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: D) 4

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Filed Under: Image Analysis
Exam Prep: Bank Exams

1 23264
Q:

The average age of a class is 15.8 years. The average age of the boys in the class is 16.4 years and that of the girls is 15.4 years. What is the ratio of boys to girls in the class ?

A) 1:3 B) 2:3
C) 3:2 D) 3:1
 
Answer & Explanation Answer: B) 2:3

Explanation:

Let number of boys = x  , Let number of girls = y
Total numbers of students = x + y
(x + y) × 15.8 = 16.4x + 15.4y
0.6x = 0.4y
x/y = 0.4/0.6 = 2/3

 

 Ratio of boys and girls in the class is 2:3

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Filed Under: Problems on Ages
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

35 23250
Q:

Which of the following terms follows the trend of the given list?

 

XYZXZXZ, XZYXZXZ, XZXYZXZ, XZXZYXZ, XZXZXYZ, _______________.

 

A) XZXZXZY   B) YXZXZXZ  
C) XYZXZXZ   D) XZYXZXZ
 
Answer & Explanation Answer: A) XZXZXZY  

Explanation:
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Filed Under: Alphabet Test
Exam Prep: Bank Exams

2 23242