model 2 find lcm of numbers Practice Questions Answers Test with Solutions & More Shortcuts

Question : 26 [SSC CGL Tier-I 2010]

The greatest number, which when subtracted from 5834, gives a number exactly divisible by each of 20, 28, 32 and 35, is

a) 5600

b) 5200

c) 4714

d) 1120

Question : 27 [SSC Constable 2013]

Five bells begin to toll together and toll respectively at intervals of 6, 7, 8, 9 and 12 seconds. After how many seconds will they toll together again ?

a) 318 Sec.

b) 504 Sec.

c) 612 Sec.

d) 72 Sec.

Question : 28 [SSC CGL Tier-I 2016]

The LCM of two prime numbers x and y, (x > y) is 161. The value of (3y – x) :

a) 2

b) 1

c) –1

d) –2

Question : 29

Four bells ring at intervals of 4, 6, 8 and 14 seconds. They start ringing simultaneously at 12.00 O’clock. At what time will they again ring simultaneously ?

a) 12 hrs. 3 min. 44 sec.

b) 12 hrs. 3 min. 20 sec.

c) 12 hrs. 3 min.

d) 12 hrs. 2 min. 48 sec.

Question : 30 [SSC CGL Tier-II 2014]

Find the least number which when divided separately by 15, 20, 36 and 48 leaves 3 as remainder in each case.

a) 723

b) 483

c) 243

d) 183