If (x -y=2) and (xy =3) , then (x + y =?)
A. 4
B. -4
C. 16
D. +- 4
সঠিক উত্তরঃ
D.
+- 4
Explanation:
Related Questions (Any University/Year)
- Sum of present ages of father & son is 70. 7 yrs ago, ratio was 5:2. Ratio after 5 yrs?
- in an exam, 90% passed History and 85% passed English if none of the students failled in both subjects and 225 passed in both subjects, calculate the number of students who have attended the exam.
- If -4 <x< 12 and -2 < y < 13 which of the following numbers represent the of maximum value (y-x)?'
- ২-এর কত শতাংশ ৮ হবে?
- You are given the equation sqrt( 3x)+3=4, which one of the following is the correct value of x?
- The average of 5 positive integers is 60. If the average of 3 of these integers is 67, what is the greatest possible value that one of the other two integers can have?
- মোহন ও সোহানের বর্তমান বয়সের অনুপাত ২ : ৩ এবং তাদের বয়সের পার্থক্য ১২ বছর। সোহানের বর্তমান বয়স কত?
- The difference of two integers is 4 and their sum is 14. What is their product?
- A shopkeeper marks an article at such a price that after allowing a discount of 30% on the tag price (including tax) he makes a profit of 40%. If the tag price of the article including tax is Tk. 460, then the cost price of that article is -
- 40% of students in a class are smart. The rest are stupid. Half the students play sports and half don't. If 20% of the students are smart and play sports, what percent of the students are stupid and don't play sports?
- Charles can do a job in 1 hour, Bill can do the same job in 2 hours, and Bob can do the job in 3 hours. How long does it take them to do the job working together?
- At Veridux Corporation, there are 250 employees. Of these, 90 are female, and the rest are males. There are a total of 40 managers, and the rest of the employees are associates. If there are a total of 135 male associates, how many female managers are there?
- The HCF of two numbers is 23 and the other two factors of their LCM are 13 and 14. The larger of the two number is
- ১১ জন কুমোর ৪ দিনে ১৪৩টি হাড়ি তৈরি করতে পারে। ৪ দিনে ১৬৯টি হাড়ি তৈরি করতে কত জন কুমোরের প্রয়োজন?
- Of the 400 students in a business school, 30% were women and of these 1/5th became entrepreneurs. If the number of men who became entrepreneurs was twice the number of women entrepreneur s, how many men became entrepreneurs?
- If each photocopy of a manuscript costs 4 cents per page, what is the cost, in cents, to reproduce x copies of an x-page manuscript?
- A hospital needs 150 pills to treat 6 patients for a week. How many pills does it need to treat 10 patients for a week?
- 40% of students in a class are smart. the rest are stupid .Half the students play sports and half don't. if 20% of the students are smart and play sports ,what percent of the students are stupid and don't play sports?
- 3, 9 ও 4 এর চতুর্থ সমানুপাতিক কত?
- A man purchased equal number of bananas at two different rates- one at the rate of 8 taka per dozen and the other at the rate of 10 taka per dozen. After that, he sold those bananas at an average rate of 11 taka per dozen and thus made a profit of 100 taka. How many dozens of banana did he purchase altogether?