Quiz Discussion

Product of two coprime numbers is 117, then their LCM is

• 1]

  9

• 2]

  13

• 3]

  39

• 4]

  117

Four bells ring at intervals of 6, 8, 12 and 18 seconds respectively since 12 o’clock. How many times will they ring simultaneously within 6 minutes of the time? (excluding the one at the start)

• 1]

  3

• 2]

  4

• 3]

  5

• 4]

  6

The product of two numbers is 2028 and their HCF is 13. The number of such pairs is :

• 1]

  1

• 2]

  2

• 3]

  3

• 4]

  4

The H.C.F and L.C.M of two numbers are 11 and 385 respectively. If one number lies between 75 and 125 , then that number is

• 1]

  77

• 2]

  88

• 3]

  99

• 4]

  110

The H.C.F. and L.C.M. of 0.63, 1.05 and 2.1

• 1]

  0.20 and 6.31

• 2]

  0.21 and 5.30

• 3]

  0.21 and 6.30

• 4]

  1.21 and 6.50

What is the least number which when divided by 5, 6, 7 and 8 leaves a remainder 3, but when divided by 9 leaves no remainder?

• 1]

  1108

• 2]

  1683

• 3]

  2007

• 4]

  3363

Which of the following has the most number of divisors?

• 1]

  99

• 2]

  101

• 3]

  176

• 4]

  182

The sum of two numbers is 528 and their HCF is 33. The number of such pairs is :

• 1]

  2

• 2]

  3

• 3]

  4

• 4]

  5

The L.C.M. of two numbers is 48. The numbers are in the ratio 2:3. Then sum of the number is:

• 1]

  40

• 2]

  50

• 3]

  60

• 4]

  35

Find the greatest number that will divide 55, 127 and 175 so as to leaves the same remainder in each case

• 1]

  1

• 2]

  16

• 3]

  24

• 4]

  15