Learn and Practice Free HCF and LCM Set 4 questions
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The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is:
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Option 5:
Product of two co-prime numbers is 117. Their L.C.M should be
Option 1: 1
Option 2: 117
Option 3: Equal to their H.C.F
Option 4: cannot be calculated
Option 5:
L.C.M of two prime numbers x and y (x>y) is 161. The value of 3y-x is :
Option 1: -2
Option 2: -1
Option 3: 1
Option 4: 2
Option 5:
A rectangular courtyard 3.78 meters long 5.25 meters wide is to be paved exactly with square tiles, all of the same size. what is the largest size of the tile which could be used for the purpose?
Option 1: 14 Cm
Option 2: 21 Cm
Option 3: 28 Cm
Option 4: 35 Cm
Option 5:
The H.C.F and L.C.M of two numbers are 11 and 385 respectively. If one number lies between 75 and 125 , then that number is
Option 1: 77
Option 2: 88
Option 3: 99
Option 4: 110
Option 5:
The sum of two numbers is 528 and their H.C.F is 33. The number of pairs of numbers satisfying the above condition is
Option 1: 4
Option 2: 6
Option 3: 8
Option 4: 12
Option 5:
The least multiple of 7, which leaves a remainder of 4, when divided by 6, 9, 15 and 18 is:
Option 1: 74
Option 2: 94
Option 3: 184
Option 4: 364
Option 5:
If the sum of two numbers is 55 and the H.C.F. and L.C.M. of these numbers are 5 and 120 respectively, then the sum of the reciprocals of the numbers is equal to:
Option 1: 55/601
Option 2: 601/55
Option 3: 11/120
Option 4: 120/11
Option 5:
The least number which when divided by 5, 6 , 7 and 8 leaves a remainder 3, but when divided by 9 leaves no remainder, is:
Option 1: 1677
Option 2: 1683
Option 3: 2523
Option 4: 3363
Option 5:
Three number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is:
Option 1: 40
Option 2: 80
Option 3: 120
Option 4: 200
Option 5:
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