# Quant Test for IBPS RRB 2018 Prelim Exam Set – 4

Institute of Banking Personnel Selection (IBPS) had released the official notification for the Common Recruitment Process for RRBs (CRP RRBs VII) for the recruitment of Group “A”-Officers (Scale-I, II & III) and Group “B”-Office Assistant (Multipurpose)

Click here to know the details of the Examination

The examination will be held in two phases i.e. Preliminary Examination and Main Examination. The RRB Scale I Preliminary Exam is scheduled on 11th, 12th & 18th of August 2018. And RRB Assistant Preliminary Exam is scheduled on 19th, 25th August & 1st September 2018Details of the exam are as under:

Practice the questions so as to familiarize yourself with the pattern of questions to be asked in the exam.

Directions(1-5) : Find the missing term of the following series.

1. 1, 9, 12, 76, 81, ?
222
252
200
297
280
Option D
+2^3,+3,+4^3,+5,+6^3
=> ? = 81 + 63
= 297

2. 9, 11, 43, 100, 177, ?
269
155
202
291
188
Option A
–2—32—57—77—92
-+30-+25-+20-+15-
=>? = 177 + 92 = 269

3. 5, 9, 28, 111, 556, ?
4782
4535
4488
4505
3335
Option E
(×2–1), (×3+1), (×4–1), (×5+1), (×6–1)
=> ? = 556 × 6 – 1 = 3335

4. 12, 12, 18, 45, 180, 1170, ?
13523
12285
15225
12335
17451
Option B
×1, ×1.5, ×2.5, ×4, ×65, …
=> ? = 1170 × (4 + 6.5)
= 1170 × 10.5 = 12285

5. 444, 556, 681, 820, ?, 1144
754
800
845
974
920
Option D
+112,+125,+139,+159,+170
-13-14-15-16
=> ? = 820 + 154 = 974

6. Two equal amounts of money are deposited in two banks, each at 9% per annum, for 4( ½) and 6(1/2) years. If the difference between their interests is Rs.288, Find each sum.
Rs.1200
Rs.1600
Rs.1300
Rs.1100
Rs.1800
Option B
Let each sum be Rs. P.
Then,( 𝑝 × 9 × 13)/(100 × 2) – (𝑝 × 9 × 9)/(100 × 2) = 288
=> 117𝑃/200 − 81𝑃/200 = 36𝑃/200 = 288
=> 𝑃 = (288 × 200)/36
= Rs.1600

7. By selling an article for Rs. 160, a dealer makes 20% loss. Next time, the dealer sold the same article in such a way that he gained 25%. What is the difference between the percentage increase in his selling price and loss made by him earlier?
42.27%
25.45%
46.12%
36.25%
30.15%
Option D
Given, S1 = Rs. 160,
Loss = 20%
S2 = ? and Gain % = 25 %
S2 = 160 ×100/(100−20)×125/100
= Rs.250
Percentage Increase in S.P = (250−160)/160 ×100 = 56.25%
Required Difference = 56.25% − 20% = 36.25%

8. A man can swim 45 m/min in still water swims 250m against the current and 250 m with the current. If the total time taken by man is 20 min, what is the speed of the current?
70
40
80
50
30
Option E
Let speed of current = x m/min
=> 250 /(45 – 𝑥) + 250/( 45 + 𝑥) = 20
=> 25(45 + 𝑥 + 45 − 𝑥) /45² − 𝑥² = 2
=>x² = 45^2 − 25× 90/ 2
=> x² = 45(45- 25)
=> x² = 900
=> x= 30 m/min.

9. The electricity bill of a certain establishment is partly fixed and partly varies as the number of units of electricity consumed. When in a certain month, 540 units are consumed, the bill is Rs. 1800. In another month, 620 units are consumed and the bill is Rs. 2040. In yet another month, 500 units are consumed? What would be the bill for the month?
1885
1225
1150
2105
1680
Option E
Bill for (620 – 540)
=> 80 units = 2040 – 1800 = 240
Bill for 1 unit = 240 /80 = 𝑅𝑠. 3
Bill for (540 – 500) = 40 units
= 40 × 3 = Rs. 120
Required bill = 1800 – 120
= 1680

10. A box contains 100 balls, numbered from 1 to 100. If three balls are selected at random and with replacement from the box, what is the probability that the sum of the three numbers on the balls selected from the box will be odd?
1/5
2/3
1/2
1/3
2/7
Option C
P(odd) = P(even) = 1/2 (because there are 50 odd and 50 even numbers)
Sum or the three numbers can be odd only under the 4 cases: Odd + Odd + Odd = 1/2×1/2×1/2 =1/8 Odd + Even + Even =1/2×1/2×1/2 = 1/8
Even + Odd + Even = 1/2×1/2×1/2 = 1/8
Even + Even + Odd = 1/2×1/2×1/2 = 1/8
Other combinations of odd and even will give even numbers.
Adding up the 4 scenarios above: = 1/8+1/8+1/8+1/8
= 4/8 = 1/2