LCM & HCF-7

 If 2 and 1 are respectively added to its numerator and the denominator, it becomes . Then, the LCM of the numerator and denominator of the fraction, must be 

• 5

• 70

• 14

• 350

What least number must be subtracted from 1936 so that the resulting number when divided by 9, 10 and 15 will leave in each case the same remainder 7? 

• 39

• 30

• 37

• 36

The product of the LCM and HCF of two numbers is 24. The difference of the two numbers is 2. Find the numbers? 

• 2&4

• 6&4

• 8&6

• 8&10

A milkman has 75 litres milk in one cane and 45 litres in another. The maximum capacity of container which can measure milk of either container exact number: 

• 15

• 25

• 1

• 5

Compute H.C.F of (2²* 2³*5*7⁴), (2³*3²*5²*7³) and (2²*5³*7⁵).

• 6760

• 6860

• 6960

• 7060

Find the H.C.F of 108, 360 and 600.

• 12

• 13

• 14

• 15

Reduce 391/667 to lowest terms.

• 7/29

• 27/29

• 17/29

• 37/29

A farmer has 945 cows and 2475 sheep. He farms them into flocks, keeping cows and sheep separate and having the same number of animals in each flock. If these flocks are as large as possible, then the maximum number of animals in each flock and total number of flocks required for the purpose are respectively 

• 45&76

• 46&75

• 15&228

• 9&380

Three big drums contain 36 liters, 45 liters and 72 liters of oil. What is the biggest measure which can measure all the different quantities exactly?

• 9

• 10

• 11

• 12

Four electronic devices make a beep after duration of 30 minutes, 1 hour, 3/2 hours and 1 hour 45 min. respectively. If all the devices beeped together at 12 noon at what time will they beep together again?

• 9am

• 10am

• 11am

• 11.30am