practice problems pending

Q1. A worker suffers a 20% cut in wages. He regains his original pay by obtaining a rise of:

Q2. If m men can do a job in d days, then the number of days in which m + r men can do the job is:


Q3. A boy walks from his home to school at 6 km per hour (kmph). He walks back at 2 kmph. His average speed, in kmph, is.


Q4. A car travels from P to Q at 30 kilometres per hour (kmph) and returns from Q to P at 40 kmph by the same route. Its average speed, in kmph, is nearest to


Q5. 5. A man invests Rs. 10,000 for a year. Of this Rs. 4,000 is invested at the interest rate of 5% per year, Rs. 3,500 at 4% per year and the rest at α% per year. His total interest for the year is Rs. 500. Then α equals


Q6. Let (x_1, x_2, \ldots, x_{100}) be positive integers such that (x_i + x_{i+1} = k) for all (i), where (k) is a constant. If (x_{10} = 1), then the value of (x_1) is

7. If (a0 = 1), (a1 = 1) and (an = a_{n-1}a_{n-2} + 1) for (n > 1), then
a465 and a466 are odd or even?








15. 











A1. 25%
A2. md/(m+r)
A3: 3
A4: 34
A5: 6.4
A6. k - 1
A7. odd,odd
8. C
9. A
10. 4
11. 3
12. Friday
13. Wednesday
14. C
15. B
16. A
17. B
18. C
19. B







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