HCF and LCM

The HCF of two numbers is 11 and their LCM is 7700, if one of the number is 275 find the other

• 279

• 283

• 308

• 318

The LCM of the two numbers is 495 and their HCF is 5. If the sum of the numbers is 10 find the difference

• 10

• 46

• 70

• 95

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

• 64

• 40

• 32

• 60

Maximum number of students among them 1001 pens and 910 pencils can be distributed in such a way that each student gets the same number of pens and the same number of pencils is

• 1911

• 1001

• 910

• 91

Let N be the greatest number that will divide 1305, 4665, 6905 leaving the same reminder in each case. The sum of the digits of N is

• 16

• 12

• 4

• 7

For different electronic devices make a beep after 30 minutes, 1 hour, 1 1 / 2 hour, and 1 hour 45 minutes respectively. All the devices beeped together at 12 noon. They will be again together at

• 12 midnight

• 3:00 a.m

• 6:00 a.m

• 9:00 a.m

Find the least number which when divided by 16, 18, 20, 25 leaves 4 as reminder in each case, but when divided by 7 leaves no reminder

• 18000

• 18004

• 18006

• 18002

The least number of 5 digits which is exactly divisible by 12, 15, and 18 is

• 10080

• 10010

• 10020

• 10015

The least multiple of 7 which leaves a remainder of 4 when divided by 6,9, 15 and 18 is

• 74

• 94

• 128

• 364

The largest number of 5 digits which when divided by 4,7,13 7 leaves a reminder 3 in each case

• 9893

• 9831

• 8739

• None