1. Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together? (4)
- (1) 8
- (2) 11
- (3) 13
- (4) 16
- (5) None of these
2. The least multiple of 7, which leaves a remainder of 4, when divided by 6, 9, 15 and 18 is: (4)
- (1) 68
- (2) 98
- (3) 180
- (4) 364
- (5) None of these
3. The least number, which when divided by 48,60, 72, 108 and 140 leaves 38, 50, 62, 98 and 130 as remainders respectively, is: (2)
- (1) 11115
- (2) 15110
- (3) 15130
- (4) 15310
- (5) None of these
4. The H.C.F. of two numbers is 11 and their L.C.M.is 7700. If one of the numbers is 275, then the other is: (3)
- (1) 269
- (2) 275
- (3) 308
- (4) 310
- (5) None of these
5. A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they meet again at the starting point? (4)
- (1) 15 minutes 15 seconds
- (2) 42 minutes 30 seconds
- (3) 42 minutes
- (4) 46 minutes 12 seconds
- (5) None of these