If 2n = n², then which of the following must be true?
A. n>1
B. n=2
C. n can be any even number
D. n should be a multiple of 2
E. none of these
সঠিক উত্তরঃ
C.
n can be any even number
Explanation:

Related Questions (Any University/Year)
- ঢাকা-আরিচা বাসে প্রথম 4 কিমি ভ্রমনের ভাড়া 10.00 টাকা, পরবর্তী 20 কিমি পর্যন্ত প্রতি কিলোমিটারের ভাড়া ৯০ পয়সা এবং পরবর্তী প্রতি কিলোমিটারের ভাড়া 70 পয়সা। 25 কিমি দূরত্বে ভ্রমনের ভাড়া কত?
- Total production cost is measure by the following mle:Total production cost = Material cost + Labor Cost + Overhead CostIn a celain production period, material cost was Tk. 20 and was Y‹ ths of labor cost. Overhead cost was Tk. 10 more than labor cost. What was the total production cost in Taka?
- Two tailors X and Y are paid a total of Tk. 550 per week by their employer. If X is paid 120 percent of the sum paid of Y. How much is Y paid per week?
- 24 men working at 8 hours per day can do a piece of work in 15 days. In how many days can 20 men working at 9 hours per day do the same work?
- Ajar contains 10 red marbles and 30 green ones .How many red marbles must be added to the jar so that 60% of the marbles will be red?
- If the 8% tax on a cell amounts to 96¢, what is the final price( tax included) of the item?
- In a kilometer race, A beats B by 50 meters or 10 seconds. What time does A take to complete the race?
- A CD player and a DVD player have the same price. If the price of the CD player goes up by 10% and that of the DVD player is decreased by 5%, how much more will it cost to buy 5 CD players and 5 DVD players?
- Instructions: DO NOT USE CALCULATOR. Figures are not drawn to scale. If x, y and z are positive integers such that when x is divided by y, the remainder is z and when x is divided by z, the remainder is (y-2), then which of the following must be true?
- In the figure above area of the inscribed rectangle is 32. The circumference of the circle is-
- একটি পাত্রে পানি ও সিরাপ ৩ঃ ৫ অনুপাতে মিশ্রিত রয়েছে । কতটুকু মিশ্রণ উঠিয়ে নিয়ে তার পরিবরর্ত পানি যুক্ত করলে তরল দুটির অনুপান ৫০ঃ৫০ হবে?
- If 12 men can build a wall 180 m long in 54 days ,how many days it will take to build a similar wall 160 m long ,if 16 men working on it
- 64 এর 75% এর এক-তৃতীয়াংশ সমান কত ?
- If an inspector rejects 0.08% reject of a product as defective, how many products will he examine in order to reject 2?
- On a 400-mile trip, car X traveled half the distance at 40 miles per hour and the other half at 50 miles per hour. What was the average speed of car X?
- A sum of BDT 200 will be divided among 5 swimmers, named Emran, Durjoy, Chopol, Billal and Anabi, who have just finished a swimming competition. Everyone will receive at least BDT 5 and no two swimmers will receive the same amount of money. Emran has come \(1^{st}\) and will get BDT 80; Durjoy has come \(2^{nd}\), Chopol is \(3^{rd}\), Billal is \(4^{th}\) and Anabi is last. Moreover, the distribution of money is subject to the following conditions: • No one will get any fractional amount of money. • The swimmer who finishes earlier must receive more money than the swimmer(s) he defeats. What are the greatest and least amount of money, consecutively, that Durjoy can receive?
- current age ratio of father and son is 7:2 After 5 years, their age ratio will be 8:3 what is the corrent age of father?
- This year the school allotted 60% of its budget for development of the computer center and its budget this year is 15% than that of the last year. If the last year's budget was Tk. 1,000,000 and the allocation to the computer center has increased by 20% compared that of the last year, calculate the allocation to the computer center last year (in taka).
- A bus use one gallon of petrol to travel 15 km. After a tune- up ,the bus travels 15% farther on one gallon .How many gallon of petrol will it take or the bus to travel 150km after tune up?
- তিনটি সংখ্যার গড় হচ্ছে ৬ এবং চারটি সংখ্যার ( পূর্বের তিনটিসহ) গড় হচ্ছে ৮ । চতুর্থ সংখ্যাটির অর্ধেক কত.হবে?