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Question - 1

Suppose LCM of two numbers is 864 and their HCF is 144. If one of the number is 288, the other number is :

  • 342
  • 234
  • 432
  • 568
Solutions
Question - 2

The HCF of two numbers is 16 and their LCM is 160. If one of the number is 32, then the other number is

  • 60
  • 80
  • 90
  • 100
Solutions
Question - 3

The H.C.F. and L.C.M. of two 2-digit numbers are 16 and 480 respectively. The numbers are :

  • 40,50
  • 50.56
  • 60,68
  • 80,96
Solutions
Question - 4

The product of two numbers is 216. If the HCF is 6, then their LCM is

  • 23
  • 33
  • 36
  • 42
Solutions
Question - 5

Product of two prime numbers is 117. Then their L.C.M. is

  • 9
  • 13
  • 117
  • 111
Solutions
Question - 6

Find the greatest possible length which can be used to measure 4m 3cm, 4m 34cm, and 4m 65cm exactly.

  • 13
  • 31
  • 14
  • 41
Solutions
Question - 7

L.C.M of 2/3, 4/9, 5/6 and 7/12 is?

  • 1/12
  • 3/25
  • 25/9
  • 140/3
Solutions
Question - 8

H.C.F . of 1/2, 3/4, 5/6, 7/8, 9/10 is?

  • 1/12
  • 1/13
  • 1/23
  • 1/120
Solutions
Question - 9

L.C.M of 3³, 4, 4² and 3 is?

  • 120
  • 432
  • 549
  • 567
Solutions
Question - 10

H.C.F . of 2³, 3² and 15 is?

  • 1/13
  • 1
  • 8
Solutions
Question - 11

H.C.F of 42, 63 and 140 is?

  • 7
  • 9
  • 13
  • 31
Solutions
Question - 12

The H.C.F of two numbers is 12 and their difference is also 12. The number are?

  • 66,78
  • 70,82
  • 84,96
  • 94,106
Solutions
Question - 13

H.C.F of three numbers is 12. If they be in ratio 1: 2: 3, the numbers are ?

  • 1,2,3
  • 2,4,6
  • 12, 24, 36
  • 13,26,42
Solutions
Question - 14

L. C . M of 2/7, 3/14 and 5/ 3 is ?

  • 12
  • 24
  • 30
  • 35
Solutions
Question - 15

The smallest number, which when diminished by 3, is divisible by 21, 28, 36 and 45 is ?

  • 340
  • 1263
  • 1342
  • 1456
Solutions
Question - 16

The H.C.F and L.C.M of two number are 44 and 264 respectively. If the first number is divided by 2, the quotient is 44. The other number is 

  • 34
  • 45
  • 132
  • 143
Solutions
Question - 17

The LCM of two number is 48. The number are in the ratio of 2:3. Find sum of the numbers.

  • 20
  • 30
  • 40
  • 50
Solutions
Question - 18

Find the LCM of 1/3, 2/9, 5/6 and 4/27.

  • 20/3
  • 3/20
  • 2/13
  • 13/2
Solutions
Question - 19

The HCF and LCM of two numbers m and n are respectively 6 and 210. If m + n = 72, then 1/m + 1/n is equal to

  • 1/11
  • 2/35
  • 1/17
  • 3/35
Solutions
Question - 20

The ratio of two numbers is 5 : 6 and their LCM is 480, then their HCF is

  • 4
  • 8
  • 12
  • 16
Solutions
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