00. If the wheel of a bicycle makes 560 revolutions in travelling 1.1 km, what is its radius? A. 31.25 cm B. 37.75 cm C. 35.15 cm D. 11.25 cm Ans : A 01. complete the job, if he worked alone? A. 24 hours B. 12 hours C. 15 hours D. 30 hours Ans : C 02. Pipe A can fill a tank in a hours. On account of a leak at the bottom of the tank it takes thrice as long to fill the tank. How long will the leak at the bottom of the tank take to empty a full tank, when pipe A is kept closed? A. (3/2)a hours B. (2/3)a C. (4/3)a D. (3/4)a Ans : A 03. A and B working together can finish a job in T days. If A works alone and completes the job, he will take T + 5 days. If B works alone and completes the same job, he will take T + 45 days. What is T? A. 25 B. 60 C. 15 D. None of these Ans : C 04. A man can do a piece of work in 60 hours. If he takes his son with him and both work together then the work is finished in 40 hours. How long will the son take to do the same job, if he worked alone on the job? A. 20 hours B. 120 hours C. 24 hours D. None of these Ans : B 05. A, B and C can do a work in 5 days, 10 days and 15 days respectively. They started together to do the work but after 2 days A and B left. C did the remaining work (in days) A. 1 B. 3 C. 5 D. 4 Ans : D 06. X alone can do a piece of work in 15 days and Y alone can do it in 10 days. X and Y undertook to do it for Rs. 720. With the help of Z they finished it in 5 days. How much is paid to Z? A. Rs. 360 B. Rs. 120 C. Rs. 240 D. Rs. 300 Ans : B 07. Ram starts working on a job and works on it for 12 days and completes 40% of the work. To help him complete the work, he employs Ravi and together they work for another 12 days and the work gets completed. How much more efficient is Ram than Ravi? A. 50% B. 200% C. 60% D. 100% Ans : D 08. A red light flashes 3 times per minute and a green light flashes 5 times in two minutes at regular intervals. If both lights start flashing at the same time, how many times do they flash together in each hour? A. 30 B. 24 C. 20 D. 60 Ans : A 09. A and B can do a piece of work in 21 and 24 days respectively. They started the work together and after some days A leaves the work and B completes the remaining work in 9 days. After how many days did A leave? A. 5 B. 7 C. 8 D. 6 Ans : B 10. Ram, who is half as efficient as Krish, will take 24 days to complete a work if he worked alone. If Ram and Krish worked together, how long will they take to complete the work? A. 16 days B. 12 days C. 8 days D. 18 days Ans : C 11. A number is selected at random from first thirty natural numbers. What is the chance that it is a multiple of either 3 or 13? A. 17/30 B. 2/5 C. 11/30 D. 4/15 Ans : B 12. What is the probability of getting at least one six in a single throw of three unbiased dice? A. 1 / 6 B. 125 / 216 C. 1 / 36 D. 91 / 216 Ans : D 13. What is the probability that a two digit number selected at random will be a multiple of 3 and not a multiple of 5? A. 2 / 15 B. 4 / 15 C. 1 / 15 D. 4 / 90 Ans : B 14. A man bets on number 16 on a roulette wheel 14 times and losses each time. On the 15th span he does a quick calculation and finds out that the number 12 had appeared twice in the 14 spans and is therefore, unable to decide whether to bet on 16 or 12 in the 15th span. Which will give him the best chance and what are the odds of winning on the bet that he takes? (Roulette has numbers 1 to 36) A. 16; 22 : 14 B. 12; 72 : 1 C. 12; 7 : 1 D.! 35 : 1 Ans : D
Posted on: Tue, 18 Nov 2014 04:44:46 +0000