Maths Quiz For RBI Assistant Mains

Directions (1-6): Study the following graph to answer the given questions.
Percent profit earned by two companies over the given years

% profit=(Income-Expenditure)/Expenditure×100

Q1. For Company M, its income in 2001-2002 was equal to its expenditure in 2002-2003, what was the ratio of its respective incomes in these two years?
(a) 4:5
(b) 3:4
(c) 5:7
(d) Cannot be determined
(e) None of these

Q2. If the income of Company M in 1998-99 was equal to the expenditure of Company N in 2001-2002, what was the ratio of their respective profits?
(a) 13:15
(b) 15:26
(c) 13:26
(d) Cannot be determined
(e) None of these

Q3. What was the difference in the expenditures of the two companies in 1999-2000?
(a) 10
(b) 100
(c) 1000
(d) Cannot be determined
(e) None of these

Q4. In 2002-03 the income of Company N was Rs. 119 crores. What was its expenditure in that year?
(a) Rs. 76.8 crore
(b) Rs. 64 crore
(c) Rs. 70 crore
(d) Cannot be determined
(e) None of these

Q5. For Company N, in which year is the percent of increase in percent profit over that of previous year the highest?
(a) 2002-03
(b) 1999-2000
(c) 2001-02
(d) Cannot be determined
(e) None of these

Directions (6-10): What should come in place of the question mark (?) in the following number series?

Q6. 980 484 236 112 50 ? 3.5
(a) 25
(b) 17
(c) 21
(d) 29
(e) None of these

Q7.  8 9 20 63 256 1285 ?
(a) 6430
(b) 7450
(c) 7716
(d) 7746
(e) None of these

Q8.  1015 508 255 129 66.5 ? 20.875
(a) 34.50
(b) 35
(c) 35.30
(d) 35.75
(e) None of these

Q9.  12 12 18 36 90 270 ?
(a) 945
(b) 810
(c) 1080
(d) 1215
(e) None of these

Q10. 4, 16, 52, 160, ?
(a) 472
(b) 474
(c) 482
(d) 468
(e) 484

Q11. A contractor undertakes to build a wall in 40 days. He employs 50 people for the same. However after 20 days he finds that only 40% of the work is completed. How many more man need to be employed to complete the work in time?
(a) 25
(b) 30
(c) 35
(d) 20
(e) None of the above

Q12. 10 men can complete a piece of work in 15 days and 15 women can complete the same work in 12 days. If all the 10 men and 15 women work together, in how many days will the work get completed?
(a) 6
(b) 61/3
(c) 62/3
(d) 72/3
(e) None of the above

Q13. Three pipes A, B and C can fill separately a cistern in 10, 12 and 15 minutes respectively. A was opened first. After 1 minute, B was opened and after 2 minutes from the start of A, C was also opened. Find the time when the cistern will be full?
(a) 21/9 minutes
(b) 41/2 minutes
(c) 413/15 minutes
(d) None of these
(e) None of the above

Q14. There are 15 friends in a group, find the probability that at least two of them are having their birth day on the same week day?
(a) 2/15
(b) 1/2
(c) 1/3
(d) 1
(e) None of the above

Q15. Seven students are to sit at one side of a straight table. Find the probability of two particular students sitting together.
(a) 1/7
(b) 2/7
(c) 3/7
(d) 5/7
(e) None of the above

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