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)

1

The product of the L.C.M. and H.C.F. of two numbers is 24. The difference of two numbers is 2. Find the numbers.

2 and 4

6 and 4

8 and 6

8 and 10

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3

The product of two numbers is 2523. If the H.C.F. of these numbers is 29, then the greater number is:

101

107

87

185

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5

X, Y and Z start at the same time in the same direction to run around a circular stadium. X completes a round in 300 seconds, Y in 600 seconds and Z in 900 seconds, all starting at the same point. After what time will they again at the starting point ?

26 minutes and 18 seconds

45 minutes

30 minutes

46 minutes and 12 seconds

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9

H.C.F. of 3240, 3600 and a third number is 36 and their L.C.M. is 2^4 x 3^5 x 5^2 x 7^2 The third number is:

2^2 x 3^5 x 7^2

2^2 * 5^3 * 7^2

2^2 * 5^2 * 7^2

2^3 * 3^5 * 7^2

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12

The L.C.M. of two numbers is 196. The numbers are in the ratio 4:7. The sum of the numbers is:

28

32

77

86

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14

The largest 4 digit number which when divided by 2, 5 or 17 leaves a remainder of 3 in each case, is

8739

9863

9834

9893

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17

What will be the least number which is three times will be exactly divisible by 6, 12, 18, 21 and 30 ?

196

420

1260

2520

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18

The greatest number which on dividing 657 and 737 leaves remainders 3 and 5 respectively, is:

6

74

133

305

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