RBI assistant prelims (14 feb) 2020 Questions and Answers Detailed Explanation
MOST IMPORTANT previous year question answers - 1 EXERCISES
Directions:
Study the following bar-graph carefully and answer the questions given below:
The bar graph given below shows the number of students participated from 2 schools A and B in three activities- Dance, Music and Theatre.
The following question based on RBI assistant topic of previous year question answers
(a) 32
(b) 30
(c) 36
(d) 30
e) 24
The correct answers to the above question in:
Answer: (b)
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Read more rbi assistant prelims 14 feb 2020 Based Previous Year Questions and Answers
Question : 1
Average of 10 observation in a series is 64. If average of first 5 observation is 45 and last 3 observation is 71 . Find the average of remaining 2
a) 91
b) 103
c) 101
d) 111
Answer »Answer: (c)
Required average
$= \text"10 x 64 - 5 x 45 - 3 x 71"/2$
$= \text"640 - 225 - 213"/2$
= 101
Question : 2
Side of a square is equal to the diameter of a circle. What is the perimeter of square, if area of circle is 616 cm2?
a) 116 cm
b) 124 cm
c) 112 cm
d) 120 cm
e) 132 cm
Answer »Answer: (c)
Radius of the circle = $√{616/π}$
= $√{\text"616 x 7"/22}$
= $√196$
= 14 cm
⇒ Side of the square = 2 × Radius
= 2 × 14 = 28 cm
Hence, the perimeter of the square = 4 × Side of the square
= 4 × 28 = 112 cm.
Question : 3
Ram and Shyam started a business with initial investments of Rs. 1000 and Rs. 2000 respectively. After few months Ram left the business. If at the end of the year the ratio of profits of Ram and Shyam is 1 : 4, then find the number of months Ram was in business.
a) 6
b) 2
c) 4
d) 3
e) 8
Answer »Answer :(a)
Let Ram left the business after x months, then
= $\text"1000 x X"/1 = \text"2000 x 12"/4$
⇒ x = 6
Question : 4
What is the difference between the number of participants in dance and theatre together from school A and the number of participants in music from the same school?
a) 8
b) 16
c) 10
d) 6
e) 12
Answer »Answer: (a)
Question : 5
What is the total number of participants in dance, music and theatre from school C, if it is 3/8 more than from school A?
a) 110
b) 125
c) 120
d) 90
e) 105
Answer »Answer: (a)
Question : 6
What is average number of participants in music from school A and B?
a) 26
b) 28
c) 32
d) 24
e) 25
Answer »Answer: (b)
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