# H.C.F and L.C.M

Q1. 128352/238368 when reduced to its lowest terms is
(a) 5/11
(b) 7/13
(c) 9/17
(d) 11/13

Q2. The L.C.M of 3/4, 6/7, 9/8 is
(a) 12
(b) 15
(c) 18
(d) 21

Q3. The ratio between two numbers is 15:11. If their H.C.F is 13, then the numbers are
(a) 141, 135
(b) 174, 145
(c) 195, 143
(d) 201, 157

Q4. The sum of two numbers is 495 and their H.C.F is 33. The numbers of such pairs is
(a) 3
(b) 4
(c) 6
(d) 7

Q5. The H.C.F of two numbers is 25. The number which can be their L.C.M is
(a) 80
(b) 95
(c) 116
(d) 125

Q6. A, B and C go walking round a circle 2 km in circumference at the rates of 20 m/min, 40m/min and 50 m/min respectively. If they all start together and walk in the same direction, when will they be together at the same place ?
(a) 110 min
(b) 145 min
(c) 170 min
(d) 200 min

Q7. Which greatest number will divide 3026 and 5053 leaving remainders 11 and 13 respectively ?
(a) 45
(b) 51
(c) 57
(d) 63

Q8. The greatest number of 5 digits, which is divisible by 15, 20, 25 is
(a) 99000
(b) 99900
(c) 99990
(d) 99999

Q9. What is the greatest number of 3 digits which when divided by 6, 9, 12 leaves a remainder 3 in each case ?
(a) 850
(b) 925
(c) 975
(d) 1050

Q10. If two numbers are in the ratio of 3:2 and the product of their H.C.F and L.C.M is 3750, then the sum of the numbers is
(a) 125
(b) 133
(c) 147
(d) 155

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