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RRB Clerk and RRB PO Prelims exam are going to be held in the upcoming months. We have already provided you with the PDFs of many topics of Quantitative Aptitude like Simplification/Approximation, Number Series,datainterpretation.important Arithmetic questions to prepare for RRB Clerk and PO Pre exam. Practicing these questions will help you to know about the level of the questions. To increase your speed and accuracy, enhance your calculations.

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                                 START QUIZ

Q1. A container contains mixture of milk and water in which milk is 80%. 75% of mixture is taken out and 10 litres water is added; now the concentration of milk in the mixture is 60%. Find the quantity of water initially.
(a) 90 litres
(b) 96 litres
(c) 72 litres
(d) 64 litres
(e) None of these

Q2. The ratio of investment of A, B, C and D in a business is 2 : 3 : 5 : 7.  A and B started the business initially, while C and D joined the business after 4 months. After 1 year the profit of C is equal to the average of the profit of A and D i.e. Rs. 24.000. Then find the share of B.
(a) Rs. 20,800
(b) Rs. 21,600
(c) Rs. 19,800
(d) Rs. 18,400
(e) None of these

Q3. The length of a rectangle is increased by 39.98%. While its breadth is decreased by 20.02%. Then find the percentage change in area.
(a) 12% increase
(b) 18% increase
(c) 25% increase
(d) 16% increase
(e) None of these

Q4. When Rs. 12, 000 invested in a scheme for years at x% simple interest per annum gives Rs. 1440 more interest as compared to the interest earned when the same principals is invested in another scheme for 4 years at (x + 2)% simple interest per annum. Find x
(a) 8%
(b) 5%
(c) 4%
(d) 12%
(e) None of these

Q5. A shopkeeper bought 150 books at the rate of Rs. 350 per book. He spent Rs. 3500 on transportation and packing. If the marked price of book is Rs. 470 per book and the shopkeeper gives a discount of 5% on the marked price then what will be the percentage profit gained by the shopkeeper?
(a) 20%
(b) 19.60%
(c) 18.20%
(d) 10.50%
(e) None of these

Directions (6-10): What will come in place of (?) in the following number series? 
Q6. 113, 130, 164, 215, ?, 368
(a) 293
(b) 273
(c) 283
(d) 327
(e) 372

Q7. 112, 259, 392, 511, 616, ?
(a) 701
(b) 707
(c) 711
(d) 715
(e) 720

Q8. 4, 6, 12, ?,90, 315, 1260
(a) 42
(b)  36
(c)  24
(d)  30
(e)  46

Q9. 6, 7, 16, 51, 208, ?, 6276
(a) 1045
(b) 941
(c)  836
(d) 1254
(e) 1154

Q10. 1130, 1164, 1232, 1334, 1470, ?
(a) 1674
(b) 1640
(c) 1606
(d) 1572
(e) 1623

S1. Ans.

S2. Ans.

S3. Ans.

S4. Ans.

S5. Ans.

S6. Ans. (c)
S7. Ans. (b)
S8. Ans. (d)
S9. Ans. (a)
S10. Ans. (b)