Quantitative Aptitude - Arithmetic Ability Questions

If a + b = 11 and a2+ b2= 61, then value of ab is

While selling an article for Rs 18450, a person suffered a loss of 50%. At what price he should have sold the article (in Rs) to earn a profit of 50%?

The average of 44 consecutive odd numbers is 144.What is the largest number?

Two cars travel from city A to city B at a speed of 30 and 44 km/hr respectively. If one car takes 3.5 hours lesser time than the other car for the journey, then the distance between City A and City B is

A can paint a house in 45 days and B can do it in 15 days. Along with C, they did the job in 5 days only. Then, C alone can do the job in how many days?

12 copies of a book were sold for Rs. 1800 thereby gaining cost price of 3 copies. The cost price of a copy of the book is

After a discount of 23% an article is sold for Rs 1848. What is the marked price (in Rs) of the article?

What is the value of sin225°+ sin265°?