operations on numbers (6.papers)

hcf and lcm (5.papers)

averages (8.papers)

problems on ages (9.papers)

percentage (4.papers)

profit and loss (4.papers)

ratio and proportion (5.papers)

chain rule (5.papers)

time and work (4.papers)

pipes and cisterns (5.papers)

time and distance (5.papers)

problems on trains (8.papers)

boats and streams (7.papers)

partnership (6.papers)

simple interest (4.papers)

compound interest (2.papers)

permutation and combination (3.papers)

clock (2.papers)

calendar (3.papers)

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6

pow(x,n) - pow(a,n) is completely divisible by (x - a), when

n is any natural number

n is an even natural number

n is and odd natural number

n is prime

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7

The sum of the two numbers is 19 and their product is 88. What is the sum of the reciprocals of these numbers ?

12/35

11/8

88/19

19/88

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11

The difference between a positive proper fraction and its reciprocal is 7/12. The fraction is:

1/3

3/4

4/5

1/4

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12

If n is a natural number, then (5(n)2 + 5n) is always divisible by:

5 only

5 & 10 both

10 only

by 15 only

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16

635 ** 2 is divisible by both 3 and 11. The non-zero digits in the hundred's and ten's places are respectively:

7 & 4

7 & 5

7 & 1

None

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20

A boy multiplied 861 by a certain number and obtained 465523 as his answer. If in the answer both 5 are wrong and the other digits are correct, then the correct answer would be:

453680

453181

467523

456881

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