IBPS RRB clerk 19 sep 2020 Questions and Answers Detailed Explanation
MOST IMPORTANT previous year question answers - 1 EXERCISES
Directions:
Read the data carefully and answer the questions.
The table given below shows the data of the number of clothes dry cleaned by four different shops - L, M, N and O on the five working days - Monday, Tuesday, Wednesday, Thursday and Friday.
Shop/Days | Monday | Tuesday | Wednesday | Thursday | Friday |
L | 50 | 60 | 85 | 25 | 110 |
M | 80 | 75 | 95 | 120 | 105 |
N | 100 | 55 | 35 | 60 | 45 |
O | 40 | 90 | 60 | 115 | 70 |
The following question based on IBPS RRB Clerk topic of previous year question answers
(a) 17 : 11
(b) 17 : 10
(c) 16 : 9
(d) 11 : 17
e) 10 : 17
The correct answers to the above question in:
Answer: (a)
Sum of the number of clothes dry cleaned by M on Tuesday and Wednesday
= 75 + 95 = 170
Sum of the number of clothes dry cleaned by L on Wednesday and Thursday
= 85 + 25 = 110
Required Ratio = 17 : 11
Hence, the answer is option A.
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Read more ibps rrb clerk prelims 19 sep 2020 Based Previous Year Questions and Answers
Question : 1
What is the difference between the sum of the number of clothes dry cleaned by O on Monday and Thursday and the difference of the number of clothes cleaned by N on Monday and Wednesday?
a) 80
b) 70
c) 60
d) 90
e) 100
Answer »Answer: (d)
Sum of the number of clothes dry cleaned by O on Monday and Thursday
= 40 + 115 = 155
The difference between the number of clothes cleaned by N on Monday and Wednesday
= 100 – 35 = 65
Required difference = 155 – 65 = 90 Hence, the answer is option D
Question : 2
The sum of the number of clothes dry cleaned by N on Tuesday, Wednesday and Thursday is what percentage of the clothes dry cleaned by O on all the days?
a) 30%
b) 40%
c) 50%
d) 55%
e) 60%
Answer »Answer: (b)
Sum of the number of clothes dry cleaned by N on Tuesday, Wednesday and Thursday
= 55 + 35 + 60 = 150
Clothes dry cleaned by O on all the days
= 40 + 90 + 60 + 115 + 70
= 375
Required percentage = $150/375$ × 100 = 40 %
Hence, the answer is option B.
Question : 3
Which of the following days had the most number of clothes dry cleaned by all the shops together?
a) Monday
b) Tuesday
c) Wednesday
d) Thursday
e) Friday
Answer »Answer: (e)
Total number of clothes dry cleaned by all the shops together on Monday
= 50 + 80 + 100 + 40 = 270
Similarly, for all the day's total number of clothes dry cleaned by all the shops is calculated and it is shown in the table below:
Shop/Days | Monday | Tuesday | Wednesday | Thursday | Friday |
L | 50 | 60 | 85 | 25 | 110 |
M | 80 | 75 | 95 | 120 | 105 |
N | 100 | 55 | 35 | 60 | 45 |
D | 40 | 90 | 60 | 115 | 70 |
The most number of clothes were dry cleaned on Friday. Hence, the answer is option E.
Directions:
What should come in place of the question mark '?' in the following number series?
Question : 4
7, 15, 31, ?, 127, 255
a) 62
b) 63
c) 64
d) 68
e) 84
Answer »Answer: (b)
The pattern of the series is as:
7 × 2 + 1 = 15
15 × 2 + 1 = 31
31 × 2 + 1 = 63
63 × 2 + 1 = 127
127 × 2 + 1 = 255
Question : 5
1.1, ?, 3.9, 5.6, 7.5
a) 1.8
b) 2.8
c) 2.4
d) 2.1
e) 2.2
Answer »Answer: (c)
The pattern of the series is:
1.1 + 1.3 = 2.4
2.4 + 1.5 = 3.9
3.9 + 1.7 = 5.6
5.6 + 1.9 = 7.5
Question : 6
1920, ?, 24, 4, 1, 0.5
a) 192
b) 240
c) 144
d) 288
e) 196
Answer »Answer: (a)
The pattern of the series is:
1920 ÷ 10 = 192
192 ÷ 8 = 24
24 ÷ 6 = 4
4 ÷ 4 = 1
1 ÷ 2 = 0.5
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