LCM AND HCF 3NUTRITION

What is the L.C.M. of 25, 30, 35 and 40?

• 3800

• 4200

• 4400

• 3200

What is the greatest number which divides 639, 1065 and 1491 exactly?

• 193

• 183

• 223

• 213

What is the H.C.F. of 4/9, 10/21 and 20/63?

• 4/189

• 6/63

• 2/63

• 2/21

Find the side of the largest square slab which can be paved on the floor of a room 5 meters 44cm long and 3 meters 74 cm broad.

• 56

• 48

• 32

• 34

The product of two numbers is 6760 and their H.C.F. is 13. How many such pairs can be formed?

• 0

• 3

• 4

• 2

. least perfect cube which is divisible by 2, 3, 4 and 6 is

• 360

• 512

• 216

• 120

. Find the greatest number which will divide 3959, 4082 and 4164 leaving the same remainder in each case.

• 30

• 45

• 41

• 43

Find the greatest number which will divide 1063 and 1403 leaving the remainder 9 in each case.

• 48

• 34

• 40

• 42

. Find the greatest number that will divide 989, 1258 and 1359 leaving remainders 66, 51 and 10, respectively.

• 71

• 81

• 68

• 73

. The traffic lights at three different road crossings change after every 24 sec., 36 sec. and 72 sec. respectively. If they all change simultaneously at 8 : 20 : 00 hrs; then they will again change simultaneously at:

• 8 : 21 : 12 hrs

• 8 : 28 : 22 hrs

• 8 : 27 : 36 hrs

• . 8 : 27 : 48 hrs