IBPS RRB PO Prelims 12 sep 2020 Questions and Answers Detailed Explanation
MOST IMPORTANT previous year question answers - 1 EXERCISES
Directions:
What approximate value will come in place of the question mark (?) in the following question? (You are not expected to calculate the exact value)
The following question based on IBPS RRB PO topic of previous year question answers
(a) 8
(b) 20
(c) 24
(d) 36
e) 12
The correct answers to the above question in:
Answer: (e)
257.12 + 187 .99 × ? = (49.98)2 + 30.99
⇒ 257 + 188 × ? = 2500 + 31
⇒ 188 × ? = 2274
⇒ x = 12
Hence, the answer is C.
Discuss Form
Read more ibps rrb po prelims 12 sep 2020 Based Previous Year Questions and Answers
Question : 1
$2.99/3.99$ x $3√{511.99}$ + 123.9% of 650.11 = ?
a) 600
b) 700
c) 750
d) 812
e) 1000
Answer »Answer: (d)
$3/4$ x 8 + 124% of 650 = x
6 + 806 = x
812 = x
Hence, the answer is D.
Directions:
Read the following table carefully and answer the given questions.
In the table, data of number of members participating in an event from 6 sports clubs – A, B, C, D, E and F.
Sports club | Total no. of members | % of members participated |
A | 4000 | 65% |
B | 9000 | 20% |
C | 4800 | 25% |
D | 5000 | 30% |
E | 6000 | 35% |
F | 6750 | 40% |
Question : 2
What is the ratio of the number of members of the sports clubs C and F, who did not participate in the event?
a) 4 : 5
b) 3 : 4
c) 5 : 9
d) 8 : 9
e) 5 : 3
Answer »Answer: (d)
The number of members of sports club C, who did not participate in the event
= (100 – 25)% of 4800 = 3600
The number of members of sports club F, who did not participate in the event
= (100 – 40)% of 6750 = 4050
Hence, the required ratio = 3600 : 4050
= 8 : 9
Question : 3
Number of members of the sports club A, who did not participate in the event is what percent more/less than that of sports club D?
a) 40%
b) 60%
c) 28%
d) 35%
e) 55%
Answer »Answer: (b)
The number of members of sports club A, who did not participate in the event
= (100 – 65)% of 4000
= 35% of the 4000 = 1400
The number of members of sports club D, who did not participate in the event
= (100 – 30)% of 5000
= 70% of the 5000 = 3500
Hence, the required percent = $\text"3500 - 1400"/3500$ × 100 = 60%.
Question : 4
24.002 × 14.005 – 7.775 × 5.964 = ?
a) 400
b) 350
c) 288
d) 220
e) 150
Answer »Answer: (c)
? = 24 × 14 – 8 × 6
= 336 – 48 = 288
Hence, the answer is C.
Question : 5
15.332 – 12.942 + 22.062 – 35.65 = ?
a) 720
b) 505
c) 402
d) 600
e) 300
Answer »Answer: (b)
? = 15.332 – 12.942 + 22.062 – 35.65
= 152 – 132 + 222 – 35
= 225 – 169 + 484 – 35
= 505.
Hence, the answer is B.
Question : 6
$√{784.01} × 7.142 + 351. 99 × 24. 98 % = ?$
a) 320
b) 400
c) 240
d) 284
e) 450
Answer »Answer: (d)
? = √{784} × 7 + 352 × 25% = 28 × 7 + 88 = 196 + 88 = 284 Hence, the answer is D.
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