1. Four bells ring at the intervals of 5, 6, 8 and 9 seconds. All the bells ring simultaneously at the same time. They will again ring simultaneously after (1) 6 minutes (2) 12 minutes (3) 18 minutes (4) 24 minutes Ans. 1 2. Three bells ring simultaneously at 11 a.m. They ring at regular intervals of 20 minutes, 30 minutes, 40 minutes respectvely. The time when all the three ring together next is (1) 2 p.m. (2) 1 p.m. (3) 1.15 p.m. (4) 1.30 p.m. Ans. 2 3. The greatest number of four digits which when divided 3, 5, 7, 9 leave remainders 1, 3, 5, 7 repspectvely is (1) 9763 (2) 9764 (3) 9766 (4) 9765 Ans. 3 4. 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 ? (1) 72 Sec. (2) 612 Sec. (3) 504 Sec. (4) 318 Sec. Ans. 3 5. The number nearest to 10000, which is exactly divisible by each of 3, 4, 5, 6, 7 and 8, is : (1) 9240 (2) 10080 ...
Preparation for Competitive exams SSC RAILWAY