A PhD research group has 12 male and 18 female participants. Males are what fraction of the class?
A. 2/5
B. 3/5
C. 2/3
D. 3/4
সঠিক উত্তরঃ
C.
2/3
Explanation:
Related Questions (Any University/Year)
- Two boats on the opposite shores of a river start moving towards each other. When they pass each other they are 750 yards from one shoreline. They each continue to the opposite shore, immediately turn around and start back. When they meet again they are 250 yards from the other shoreline. Each boat maintains a constant speed throughout. How wide is the river?
- The average age of a man and his son is 20. After 10 years, their age will be in the ratio 2:1. What was the age of the man and his son 5 years ago respectively?
- টেলিফোন ডায়ালে 0 থেকে 9 পর্যন্ত লেখা থাকে। যদি কক্সবাজার শহরের টেলিফোনগুলো 5 অংক বিশিষ্ট হয়, তবে ঐ শহরে কত টেলিফোন সংযোগ দেয়া যাবে?
- Instructions: Each question consists of a problem followed by two statements. Decide whether the data in the statements are sufficient to answer the question. Eshan and Arnob have the same birthday. Arnob's age now is the same as Ehsan's age was when Arnob was half as old as Ehsan is now. What is Ehsan's age now? (1) Ehsan is currently four times as old as he was when Arnob was born. (2) Ehsan was six years old when Arnob was born.
- Asif Is now 14 years older than Saif. If in 10 years Asif will be twice as old as Saif. How old will Asif be in 7 years?
- একটি সমকোনী ত্রিভুজের একটি কোন ৩০° হলে অপরটি কত ডিগ্রি ?
- A factory that employs 1000 assembly in workers pays each of these workers at a rate of Tk. 5 per hour for the first 40 hours worked during a week and 1.5 times that rate for the hours worked in excess of 40 hours. What is the total amount paid to the workers in a week in which 30% of the workers worked 20 hours, 50% worked 40 hours and the rest of the workers worked 50 hours?
- Instructions: DO NOT USE CALCULATOR. Figures are not drawn to scale. If x and y are positive integers and \(\frac{1}{x} + \frac{1}{y} = \frac{1}{9}\), what is the difference between the maximum and minimum value of x?
- 9 men went to a restaurant together. 8 of them spent Tk. 3 each over their meals and the 9th man spent Tk. 2 more than the average expenditure of all the 9 men. Find out the total money spent by the 9 men?
- The average of a set of 12 numbers which includes 34 is N. If 34 is removed from the set and 38 is added to the set, what is the average of the new set of numbers in terms of N?
- It takes 27 seconds and 17 seconds for two trains to cross a stationary man on the platform in reverse. If two trains take 23 seconds to cross each other, what is the speed ratio?
- Two nations produce 1/5 and 3/10 respectively, of the world production of aluminum. What fraction of world production do the other nations produce together?
- তিনটি মেশিন একটি কাজ যথাক্রমে ৪, ৬ এবং ৮ ঘণ্টায় সম্পন্ন করতে পারে। দুইটি মেশিন সর্বোচ্চ ক্ষমতায় কাজ করে এক ঘণ্টায় কতটুকু কাজ করতে পারবে?
- একটি ঝুড়িতে আপেল এবং কমলা মিলিয়ে ৭০ টি ফল আছে। প্রতিটি আপেল এবং কমলা ১৯ টাকা দরে কেনা হয়েছে । সবগুলো ফল কিনতে যদি ১৩৩০ টাকা খরচ হয় এবং আপেল এর চাইতে চারটি কমলা কম থাকে। তবে ঝুড়িতে কয়টি আপেল ছিল?
- Last year Mrs. Shahana received TK. 160 in dividends on her shares in company X stock if she had 15 more shares of the stock last year, she would have received TK. 25 more in total dividends. How many shares of the stock did she have last year?
- If a certain vase contains only roses and tulips, how many tulips are there in the vase?i. The number of roses in the vases is 4 times the number of tulips in the vase.ii. There is total of 20 flowers in the vase
- দুইটি ক্রমিক সংখ্যার বর্গের পার্থক্য ১৯। তার মধ্যে একটি সংখ্যার বর্গমূল ৩ হলে অন্যটি কত?
- If 1.4 is halfway between two point x and y , what are the possible values of x and y?
- A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is:
- A man buys some shirts and some ties. The shirts cost. Tk. 7 each and the ties cost Tk. 3 each. If the man spends exactly Tk. 81 and buys the maximum number of shirts possible under these prices, what is the ratio of shirts to ties?
- 6 points of 20% solution of alcohol in water are mixed with 4 points of a 10% alcohol in water solution.The percentage alcohol in the new solution is
- ১০টি বানর ১ মিনিটে ১০টি কলা খেতে পারে। ৫০টি বানরের ৫০টি কলা খেতে কত সময় লাগবে?
- Machine A can produce 40 bolts per minute, whereas machine B can produce only 30 per minute. Machine A begans along to make bolts but it breakdown after 1.5 minute and machine B must complete the job . If the job requires 300 bolts, how long does the whole operation take?
- In the figure below AD=4 AB=3 and CD=9, what is the area of triangle ACE?
- Harun is three times us old as Tamim. In eight years, he will be twice as old as Tamim. How old was Harun 3 years ago?
