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) 80
(b) 70
(c) 60
(d) 90
e) 100
The correct answers to the above question in:
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
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Read more ibps rrb clerk prelims 19 sep 2020 Based Previous Year Questions and Answers
Question : 1
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 : 2
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.
Question : 3
What is the number of shops who dry cleaned more number of clothes than O on all the days put together?
a) 0
b) 1
c) 2
d) 3
e) Cannot be determined
Answer »Answer: (b)
Number of clothes dry cleaned by L on all the days put together
= 50 + 60 + 85 + 25 + 110 = 330
Similarly, for all the shop's total number of clothes dry cleaned on all the days is calculated and it is shown in the table below:
| Shop/Days | Monday | Tuesday | Wednesday | Thursday | Friday | Total |
| L | 50 | 60 | 85 | 25 | 110 | 330 |
| M | 80 | 75 | 95 | 120 | 105 | 475 |
| N | 100 | 55 | 35 | 60 | 45 | 295 |
| D | 40 | 90 | 60 | 115 | 70 | 375 |
Question : 4
What is the ratio of the sum of the number of clothes dry cleaned by M on Tuesday and Wednesday and the sum of the number of clothes dry cleaned by L on Wednesday and Thursday?
a) 17 : 11
b) 17 : 10
c) 16 : 9
d) 11 : 17
e) 10 : 17
Answer »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.
Directions:
What should come in place of the question mark '?' in the following number series?
Question : 5
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 : 6
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
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