The HCF and LCM of two numbers are 12 and 924 respectively. Then the number of such pairs is: 

The LCM of two numbers is 12 times their HCF. The sum of the HCF and the LCM is 403. If one of the number is 93, then the other number is. 

Two numbers are in the ratio 3 : 4. Their LCM is 84 . The greater number is: 

Two numbers are in the ratio 3: 4 if their LCM  is 240 then smaller number will be

HCF and LCM of two numbers are 7 and 140 respectively. If the numbers are between 20 and 45, the sum of the numbers is: 

The sum of the HCF and LCM of two numbers is 680 and the LCM is 84 times the HCF. If one of the numbers is 56, the other is : 

The traffic lights at three different road crossings change after 24 seconds, 36 seconds and 54 seconds respectively. If they all change simultaneously at 10 : 15 : 00 AM, then at what time will they again change simultaneously? 

What is the HCF of 16, 72 and 28 ?