For the following questions answer them individually
Coefﬁcient of x in (x + 9)(8 - 5x) is
A shopkeeper by selling 5 items, earns a profit equal to the selling price of 1 item. What is his profit percentage?
An angle is greater than its complementary by 20°. What will be the measure of the angle?
Find two numbers such that their mean proportion is 12 and third proportion is 768.
By what least number should 1200 be multiplied so that it becomes a perfect square?
|7||Ravindra Nath Chauhan||5|