গাণিতিক যুক্তি
মোট ১৯৫৮২ টি প্রশ্ন · উত্তর ও ব্যাখ্যাসহ · বিনামূল্যে
৩৪৮১–৩৫০০ দেখানো হচ্ছে, মোট ১৯৫৮২ টির মধ্যে
- M and N can do a piece of work in 20 days and 12 days respectively. M started the work alone and then after 4 days, N joined him till the completion of the work. How long did the work last? MCQ
- A military camp had enough food supplies to last for a certain number of days. After 10 days, 1/5 of the men desert and it is found that the provisions will now last just as long as before. How long was that? MCQ
- 3 men, 4 women, and 6 children can complete a work in 7 days. A woman does double the work a man does and a child does half the work a man does. How many women alone can complete this work in 7 days? MCQ
- 64 persons can dig a trench 50m long, 2m wide, and 2m deep in 5 days, working 12 hours daily. In how many days, working 8 hours daily, will 80 persons dig another trench 75m long, 4m wide, and 3m deep? MCQ
- P can complete work in 12 days working 8 hours a day. Q can complete the same work in 8 days working 10 hours a day. If both p and Q work together, working 8 hours a day, in how many days can they complete the work? MCQ
- A job can be done by 3 skilled workmen in 20 days or by 5 boys in 30 days. How many days will they take if they work together? MCQ
- Jahir is twice as good as a workman as Kabir. When they work together they can finish a task in 16 days. If Kabir works alone, in how many days he will complete the task? MCQ
- A cistern can be filled by two pipes P & Q in 20 and 30 min respectively. Both pipes being open, when must the first pipe be turned off so that the cistern may be filled in 10 minutes more? MCQ
- Coffee worth Tk. 180 per kg and Tk. 210 per kg are mixed with a third variety in the ratio 2 : 1 : 3. If the mixture is worth Tk. 225 per kg, the price of the third variety per kg will be: MCQ
- Which is better investment: 11% stock at 143 or (39/4)% stock at 117? MCQ
- A can contains a mixture of two liquids A and B in the ratio 5 : 3. When 12 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 5 : 8. How many litres of liquid A was contained by the can initially? MCQ
- An investor purchased 100 shares of stock X at
tk per share and sold them all a year later at 24 tk per share. If the investor paid a 2 percent brokerage fee on both the total purchase price and the total selling price, which of the following is closest to the investor's percent gain on this investment? MCQ - How many kgs of rice costing Tk 12 per kg must be mixed with 35 kg of rice costing Tk 8 per kg so that may be a gain of 15% by selling the mixture at Tk 12.65 per kg? MCQ
- A man buys Tk. 40 shares paying 6% dividend. The man wants to have an interest of 12% on his money. The market value of each share is- MCQ
- A mixture of 200 liters of wine and water contains 25% water. How much more water should be added so that water becomes 40% of the new mixture? MCQ
- A man invests Tk. 8,100 partly in 14% stock at 294 and partly in 12% stock at 288. If his income from both is the same, find his investment in the 14% stock. MCQ
- In what proportion water must be added to spirit to gain 20% by selling it at the cost price? MCQ
- Find the annual income obtained by investing Tk 3000 in 5% debentures of face value Tk 100 at Tk 125? MCQ
- An alloy of gold and copper weights 50 g. It contains 80% gold. How much gold should be added to the alloy so that percentage of gold is increased to 90? MCQ
- A wants to secure an annual income of Tk. 1500 by investing in 15% debentures of face value Tk. 100 each and available for Tk. 104 each. If the brokerage is 1%, then the sum of money he should invest is - MCQ