গাণিতিক যুক্তি
মোট ১৯৫৮২ টি প্রশ্ন · উত্তর ও ব্যাখ্যাসহ · বিনামূল্যে
১৬১৪১–১৬১৬০ দেখানো হচ্ছে, মোট ১৯৫৮২ টির মধ্যে
- α and β are the roots of 2x2 + 5x + 2 = 0 then, the value of (1/α) + (1/β) is- MCQ
- The expression (3x2 + x - 12) - 2(x2 + 4x + 9) is equivalent to which of the following: MCQ
- How many real roots does the equation have?
x2 + 6x + 10 = 0 MCQ - If f(x) = x2 - 5x + 6 and f(x) = 0 then, x = ? MCQ
- If dividing P(x) = 5x3 + 6x2 - ax + 6 by x - 2 results the remainder 6 then find the value of a. MCQ
- Which is the correct factor analysis of x2 - 2xy - z2 + 2yz: MCQ
- Solve the following equation: (x/3) - (1/12) = (1/6) + (x/4) MCQ
- The equation x2 - kx + 36 = 0 has two equal roots, then the value of k is- MCQ
- What is the length of a train that takes 12 seconds to pass a pole when it runs at a speed of 24 km/h? MCQ
- A tank is filled in 8 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe B alone take to fill the tank? MCQ
- A boat sailing against a stream of river takes 6 hours to travel 36 km while sailing with the stream it takes 3 hours to travel the same distance. What is the speed of the stream? MCQ
- An electric pump can fill a tank in 3 hours. Because of a leak in the tank it took 7/2 hours to fill the tank. If the tank is full, how much time will the leak take to empty it? MCQ
- A takes 3 hours more than B to walk d km, but if A doubles his speed, then he can make it in 1 hour less than B. How much time does A require for walking d km? MCQ
- Four pipes can fill a tank in 15, 20, 30 and 60 hours respectively. The first pipe was opened at 8 a.m, second at 9 a.m, third at 10 a.m. and fourth at 11 a.m. When will the tank be full- MCQ
- A and B can do a piece of work in 45 and 40 days respectively. They began the work together but A leaves after some days and B finished the remaning work in 23 days. After how many days did A leave? MCQ
- A long distance runner runs 8 laps of a 360 meters track everyday. His timings for four consecutive days are 78, 86, 79 and 77 minutes respectively. On an average, how many meters/minute does the runner cover? MCQ
- An outlet pipe can empty a cistern in 10 hours. In what time will it empty 3/5 part of the cistern? MCQ
- A man in a train notices that he can count 21 telephone posts in one minute. If they are known to be 25 meters apart, then at what speed is the train travelling? MCQ
- The speed of a car increases by 2 km after every one hour. If the distance travelled in the first one hour was 30 km, what was the total distance travelled in 10 hours? MCQ
- A tap can fill a tank in 10 minutes and another can empty it in 6 minutes. If the tank is fill already two-fifths and both the taps are opened together, how long will it take to completely emptied? MCQ