The sum of two numbers is 18 and their HCF and LCM are 3 and 54 respectively. What will be the sum of their reciprocals?

Three bells start ringing after interval of 20 minutes, 25 minutes and 40 minutes. They ring simultaneously at 8:00 am. They will ring simultaneously again at

Three bells start ringing after interval of 20 minutes, 25 minutes and 40 minutes. They ringsimultaneously at 8: 00 am. They will ring simultaneously again at :

The largest four-digit number which when divided by 9, 18 and 23, leaves a remainder 5 in each case, is:

The LCM of 26, 34, 221 and 195 is:

The LCM of two numbers is 105 and numbers are in ratio 5 : 3. Find sum of numbers.

The LCM of 44, 32, 176 and 352 is:

The LCM of 46, 68, 136 and 138 is:

The LCM of 40, 20, 195 and 160 is:

The LCM of 42, 36, 312 and 126 is:

What is the highest number between 5000 and 5500, which when divided by 12,16 and 24, would leave a remainder 9?