1. | The smallest number, which when divided by 12 and 16 leaves remainder 5 and 9 respectively, is ? | |
2. | Three bells ring simultaneously at 11a.m. They ring at regular intervals of 20 minutes, 30 minutes, 40 minutes respectively. The time when all the three ring together next is ? | |
3. | The greatest number of four digits which when divided by 3, 5, 7, 9 leave remainders 1, 3, 5, 7 respectively is ? | |
4. | Four bells ring at the intervals of 5, 6, 8 and 9 seconds. All the bells ring simulataneously at some time. They will again ring simultaneously after ? | |
5. | The greatest number of four digits which when divided by 12, 16 and 24 leave remainders 2, 6 and 14 respectively is ? | |
6. | The traffic lights at three different road crossings change after 24 seconds, 36 seconds and 54 seconds respectively. If they all change simultaneously at 10 : 15 : 00 AM, then at what time will they again change simultaneously ? | |
7. | 4 bells ring at intervals of 30 minutes, 1 hour, 1 and 1/2 hour and 1 hour 45 minutes respectively. All the bells ring simultaneously at 12 noon. They will again ring simultaneously at ? | |
8. | The smallest number, which when increased by 5 is divisible by each of 24,32, 36 and 564, is ? | |
9. | The largest 4-digit number exactly divisible by each of 12, 15, 18 and 27 is ? | |
10. | Three electronic devices make a beep after every 48 seconds, 72 seconds and 108 seconds respectively. They beeped together at 10 a.m. The time when they will next make a beep together at the earliest is ? | |