1. The L.C.M. of two numbers is 840 and their H.C. F. is 14. If one of the numbers is 42, find the other – (1)
(1) 280
(2) 420
(3) 140
(4) 88
2. Find the largest number which when divides 99, 123 and 183 leaves the same remainder – (3)
(1) 24
(2) 26
(3) 12
(4) 18
3. Find the least number which when divided by 12, 18, 36 and 45 leaves the remainders 8, 14, 32 and 41 respectively (1)
(1) 176
(2) 180
(3) 178
(4) 186
4. Find the smallest number which is divided by 4, 9, 12 and 16 each time leaves 3 remain – (3)
(1) 290
(2) 141
(3) 147
(4) 146
5. Starting together from the same point Ramesh, Rajesh and Rakesh can run a circular track in 54, 63 and 72 minutes respectively. After how much time they will be again at the starting point? (3)
(1) 14 hours 30 min.
(2) 25 hours 30 min.
(3) 25 hours 12 min.
(4) None of these
