Math

মোট 1015 টি প্রশ্ন

691 A, B and C start running around a circular field having circumference 144 m at the same time from the same point. Speeds of A, B and C are 6 m/min, 8 m/min and 12 m/min. Find after how much time, they will meet again at the same point for the first time.
692 After dividing a positive integer, Y, by 3, the remainder is 2, but when Y is divided by 7, the remainder is 4. What is the least possible value of Y?
693 At what rate of compound interest rate per annum will a sum of Tk. 1,200 becoine Tk. 1,348.32 in 2 years?
694 Find the compound interest at the rate of 10% per annum for four years on the principal which in four years at the rate of 4% per annum gives Tk. 1,600 as simple interest.
695 A train of length 150m takes 10 seconds to cross another train 100m long coming from the opposite direction. If the speed of first train is 30 km/hr, what is the speed of second train?
696 A, B and Center into partnership by making investments in the ratio 3 : 5: 7. After a year, C invests another Tk. 3,37,600 while A withdraws Tk. 45,600. The ratio of investments then changes to 24:59: 67. How much does A invest initially?
697 Ahad buys 80 kg sugar at Taka 40 per kg and 40 kg rice at Taka 50 per kg. At what price approximately in Taka per kg should he sell to make a profit of 10% on cost?
698 Average of P, Q (sum=72) and R (42)
699 Find the largest fraction from the following
700 A train passes a platform in 40 sec and a woman standing on the platform is 30 sec. If the speed of the train is 108 km/hr, what is the length of the platform?
701 A, B and Center into partnership with investments in the ratio of 5:7: 8. If, at the end of the year A’s share of profit is Tk. 42,360, how much is the total profit?
702 Alam sold an item for Tk. 6,384 and incurred a loss of 30%. At what price should he have sold the item to have gained a profit of 30%?
703 ax2+4x+3=0ax2+4x+3=0 সমীকরণটির মূলদ্বয় বাস্তব ও অসমান হলে, এর মান যে ব্যবধিতে অবস্থিত তা হলো-
704 Find the next number in the following pattern: 320, 160, 80, 40,…….
705 A train starts from city Y at 2 pm and travels towards city X at 75 km/hr. Another train starts from city X at 1 pm and travels towards Y at 60 km/hr. If the distance between these two cities is 330km then at what time will they meet?
706 A, B, C subscribe Tk. 50,000 for a business. A subscribes Tk. 4,000 more than B and B Tk. 5,000 more than C. Out of a total profit of Tk. 35,000 A receives
707 Alam sold two vehicles for Tk. 46,000 each. If he gained 10% on the first and lost 10% on another, then what is his percentage profit or loss in this transaction?
708 Bill and Ben can clean the garage. together in 6 hours. If it takes Bill 101 hours working alone, how long will it take Ben working alone?
709 For a certain student, the average of five test scores is 83. If four of the scores are 81,79,85 and 90 . What is the score of the fifth test ?
710 A train takes 10 seconds to cross a pole and 20 seconds to cross a platform of length 200m. What is the length of the train?
711 a, b, c, d and e are five consecutive integers in increasing order of size. Which one of the following expression is not odd?
712 Ali buys 1,440 dozen pens @ Tk.2.50/dozen and sells @ Tk.0.25 each. Total profit?
713 Calculate the next time of appearance of Halley’s Comet.
714 Four students aged 11,9, 7 and 4 share a sum of money in the ratio of their ages . If the youngest student receives TK. 1,200 what is the sum of money ?
715 A train takes 50 sec to cross a boy travelling at 6 km/h in the opposite direction to it. Another train which is half as long as and 25% faster take 30 sec to cross the stationary pole. Find the approximate length of the second train.
716 a, b, c, d চারটি ক্রমিক স্বাভাবিক সংখ্যা হলে নিচের কোনটি পূর্ণবর্গ সংখ্যা?
717 An employee may claim Tk. 7 for each kilometer when he travels by taxi and Tk. 6 for each kilometer when he drives his own car. If in one week he claimed Tk. 900 for traveling 135 km, how many kilometers did he travel by taxi?
718 Code for GREECE if ENGLAND=1234526, FRANCE=785291
719 Group A has 20 members and Group B has 28. If a total of 42 people belong to the two groups, how many people belong to both groups?
720 A train travels 360 km at a uniform speed. If the speed had been 5 km/h more, it would have taken 1 hour less for the same journey. Find the speed of the train.