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

Question : 41 [SSC Section Officer 2007]

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

a) 364

b) 184

c) 94

d) 76

Question : 42 [SSC CGL Prelim 2002]

4 bells ring at intervals of 30 minutes, 1 hour, 1$1/2$ hour and 1 hour 45 minutes respectively. All the bells ring simultaneously at 12 noon. They will again ring simultaneously at :

a) 9 a.m.

b) 6 a.m.

c) 3 a.m.

d) 12 mid night

Question : 43

Four bells ring at the intervals of 5, 6, 8 and 9 seconds. All the bells ring simultaneously at some time. They will again ring simultaneously after

a) 24 minutes

b) 18 minutes

c) 12 minutes

d) 6 minutes

Question : 44 [SSC CGL 2013]

L.C.M. of $2/3, 4/9, 5/6$ is

a) $20/27$

b) $10/3$

c) $20/3$

d) $8/27$

Question : 45

The smallest number, which when divided by 5, 10, 12 and 15, leaves remainder 2 in each case; but when divided by 7 leaves no remainder, is

a) 91

b) 175

c) 182

d) 189