Quantitative Apitude-H.C.F & L.C.M. of Numbers

Quantitative Apitude-H.C.F & L.C.M. of Numbers
11. The sum of two numbers is 528 and their H.C.F. is 33.The number of pairs of such numbers satisfying the above condition is :
  • 6
  • 12
  • 8
  • 4
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12. The product of two 2-digit number is 2028 and their G.C.M. IS 13. The number are:
  • 26, 78
  • 39, 52
  • 13, 156
  • 36, 68
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13. The H.C.F. of two numbers is 12 and their difference is 12. The numbers are :
  • 66, 78
  • 70, 82
  • 94, 106
  • 84, 96
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14. The H.C.F. of two numbers is 11 and their L.C.M.  is 7700. If one these numbers is 275, then the other one is :
  • 279
  • 283
  • 308
  • 318
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15. The L.C.M. of two number is 45 times their H.F.C. If one of the numbers is 125 and the sum of H.C.F. and L.C.M. is 1150, the other number is :
  • 215
  • 220
  • 225
  • 235
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16. About the number of pairs which have 16 as their H.C.F. and 136 their L.C.M. we  can definitely say that :
  • Only oe such par exists
  • Only two such pairs exist
  • Many such pairs exist
  • No such pair exists
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17. The L.C.M. and L.C.M. of two numbers are 50 and 250 respectively If the first number is divided by 2, the quotient is 50. the secnd number is :
  • 50
  • 100
  • 125
  • 250
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18. The product of two numbers is 1320 and their H.C.F. is 6. The L.C.M of the numbers is:
  • 7920
  • 220
  • 1314
  • 1326
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19. The greatest number which exactly divides 105, 1001, 2436 is :
  • 3
  • 7
  • 11
  • 21
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20. The largest number which divides 25, 73 and 97 to leave the same remainder in each case is :
  • 24
  • 23
  • 21
  • 6
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