HCF and LCM

Find the HCF of 72,288 and 1080

• 36

• 72

• 144

• 288

The product of two numbers is 2286. If their HCF is 9,what is their LCM?

• 240

• 280

• 124

• 254

Three numbers are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is:

• 40

• 80

• 120

• 200

HCF of two numbers is 12 and their sum is 288. How many such pairs of numbers is possible?

• 3

• 2

• 4

• 1

The number of number pairs lying between 40 and 100 with their HCF as 15 is

• 3

• 2

• 4

• 1

What is the minimum number of square tiles to required fit in a rectangular floor of dimension 720*540?

• 13

• 12

• 14

• 11

Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?

• 13

• 16

• 14

• 15

In a meet, persons from five different places have assembled in Bangalore High School. From the five places the persons come to represent are 42,60,210,90 and 84. What is the minimum number of rooms that would be required to accommodate so that each room has the same number of occupants and occupants are all from the same places?

• 44

• 62

• 81

• 96

Find the greatest number that will divide 43, 91 and 183 so as to leave the same remainder in each case.

• 13

• 2

• 4

• 11

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:

• 1325

• 840

• 1683

• 1563