• 661 If 1/2 of the air in a tank is removed with each stroke of a vacuum pump, what fraction of the original amount of air has been removed after four strokes ? ›
• 662 If 5 men and 9 women can do a piece of work in 19 days, then in how many days will 3 men and 6 women do the same work? ›
• 663 If a bookstore owner buys 15 books less for Tk. 900 when the price of each book goes up by Tk. 3, than find the original price of a book. ›
• 664 If sinA + sin^2 A = 1, then the value of the expression (cos^2A + cos^4A) is ›
• 665 A train 240m long passed a pole in 24 seconds. How long will it take to pass a platform 650m long? ›
• 666 A water tank has two taps (Tap-1 and Tap-2). Tap-1 can fill a tank in 8 hours and Tap-2 can empty the tank in 16 hours. How long will they take to fill the tank if both taps are opened simultaneously but Tap-2 is closed after 8 hours? ›
• 667 ABC ABC ত্রিভুজের BC বাহুকে E বিন্দু পর্য্নত এমনভাবে বর্ধিত করা হলো যেন ∠ACF=100°,∠ABC=40° হলে ∠A∠ACF=100°,∠ABC=40° হলে ∠A সমান হবে ›
• 668 An n x n array v is defined as follows, V(i, j) =i- j for all i, j, 1 <=n, 1 <=j<=n The sum of the elements of the array v is ›
• 669 During periods of inflation, tax rates should ›
• 670 A train 360 m long is running at a speed of 45 km/hour. In what time will it pass a bridge 140m long? ›
• 671 A wheel rotates 10 times per minutes and moves 20m during each rotation. How many meter does the wheel move in 1 hour? ›
• 672 ABC ত্রিভুজের AB ও AC বাহুর মধ্যবিন্দুদ্বয় যথাক্রমে E, F. EBCF চতুভুর্জটি একটি ›
• 673 Annual interest rate for Tk.60,000 earning Tk.6,000 in 5 years ›
• 674 Eight telephone poles are each 15 feet apart. What is the distance, in feet, from the first to the last pole ? ›
• 675 A train can cross another train of equal length coming from the opposite direction with the speed of 108km/h in 3 minutes. The speed of the other train is 90km/h. Find the length of the train. ›
• 676 A wholesaler sells goods to a retailer at a profit of 20%. The retailer sells to the customer, who pays 80% more than the cost of the wholesaler. What is the retailer’s profit? ›
• 677 According to a survey of business firms in a certain city, 750 firms offer their employees health insurance , 640 offer dental insurance and 280 offer health insurance and dental insurance. How many firms offer their employees health insurance or dental ›
• 678 Apu, Babu, and Tipu bought a football. Apu paid the largest amount of money, Tipu paid twice as much as Babu, and Babu paid the least. Apu paid Tk. 70 less than the difference between what Babu and Tipu paid. If Babu and Tipu had each paid Tk. 10 less, then Tipu would have paid twice the amount Babu paid. What is the price of the football? ›
• 679 f(x)=10 হলে (0)=? ›
• 680 A train can travel 50% faster than a car. Both start from point A at the same time and reach point B 75 kms away from A at the same time. On the way, however, the train lost about 12.5 minutes while stopping at the stations. The speed of the car is: ›
• 681 A, B and C are partners of a company. During a particular year A received one third of the profit, B received one-fourth of the profit and C received the remaining Tk. 5,000. How much did A receive? ›
• 682 After being dropped a certain ball always bounces back to ⅖ of the height of its previous bounce. After the first bounce it reaches a height of 125 inches. How high (in inches) will it reach after its fourth bounce? ›
• 683 Area of square with perimeter 80 ›
• 684 Father=son+32yrs. In 7yrs, father=2×son+5. Father’s age in 3yrs? ›
• 685 A train leaves a station A at 7 am and reaches another station B at 11 am. Another train leaves B at 8 am and reaches A at 11:30 am. The two trains cross one another at ›
• 686 A, B and C can complete a piece of work in 24, 6 and 12 days respectively. Working together, they will complete the same work in: ›
• 687 After distributing the chocolates equally among 25 kids, 8 chocolates remain. Had the number of children been 28, 22 chocolates would have been left after equally distributing. Find the total number of chocolates? ›
• 688 At the end of a banquet 10 people shake hands with each other. How many handshakes will there be in t otal? ›
• 689 Find the area of a right angled triangle whose hypotenuse is 10cm and base 8cm. ›
• 690 A train left 30 minutes later than the Schedule time and to reach its destination in time it increased its speed by 250 km/hr. If the target is 1,500 km away, find the speed of the train? ›