RBI OFFICER GRADE ‘B’ PHASE-I EXAM Held on : 22.11.2015 (Part-I)

Total Questions: 50

21. Study the following pie-charts carefully and answer the questions given below them.

What is the difference between the male members and female members taking health clubs C, D and E together?

Percentage of male members
Number of male members
= 3500

Correct Answer: (1) 322
Solution:

                                       Club C:

22. Study the following pie-charts carefully and answer the questions given below them.

What is the central angle corresponding to the total number of members (males and females) in the health clubs A and C taken together?

Percentage of male members
Number of male members
= 3500

Correct Answer: (2) 126°
Solution:

Percentage of total members in clubs A and C

23. The area of a rectangle is 150 sq. metre. On increasing its breadth by 2 metre and decreasing its length by 5 metre, the area is decreased by 30 sq. metre. What will be the perimeter of a square whose side is equal to the length of the rectangle? (in metre).

Correct Answer: (1) 60
Solution:

Length of rectangle metre
and breadth metre.


Perimeter of square
metre

24. In each of the following number series, there is a wrong number that does not follow the rule/pattern of the series. Find the wrong number.

1 2 6 21 88 505 2676

Correct Answer: (1) 505
Solution:

The pattern is :

≠

25. In each of the following number series, there is a wrong number that does not follow the rule/pattern of the series. Find the wrong number.

6 4 5 8.5 18 48 139

Correct Answer: (2) 48
Solution:

The pattern is :
≠

26. In each of the following number series, there is a wrong number that does not follow the rule/pattern of the series. Find the wrong number.

7 8 35 160 505 1232 2563

Correct Answer: (3) 505
Solution:

The pattern is:

≠

27. In each of the following number series, there is a wrong number that does not follow the rule/pattern of the series. Find the wrong number.

18 21 25 35 52 78 115

Correct Answer: (4) 21
Solution:

The pattern is:

28. In each of the following number series, there is a wrong number that does not follow the rule/pattern of the series. Find the wrong number.

120 137 178 222 290 375 477

Correct Answer: (5) 178
Solution:

The pattern is:

≠

29. 6 men can complete a piece of work in 12 days. 8 women can complete the same piece of work in 18 days and 18 children can do it in 10 days. 4 men, 12 women and 20 children do the work for 2 days. If the remaining work be completed by men only in 1 day, how many men will be required?

Correct Answer: (1) 36
Solution:

1 man will complete the work in days
1 woman will complete the work in days
1 child will complete the work in days
4 men 12 women 20 children's 2 days' work

30. A boat takes 3 hours less time in rowing from point X to point Y in downstream than that in rowing from point Y to point Z in upstream. The distance between X and Y is 20 km which is half of the distance between Y and Z. Speed of boat B in still water is 10kmph. The speed of boat A in still water is equal to the rate upstream of boat B. What is the speed of boat A in still water? (in kmph).

Correct Answer: (2) 8
Solution:

Speed of current kmph (let)