In a company, there are 75% skilled workers and remaining ones are unskilled. 80% of skilled workers and 20% of unskilled workers are permanent. If number of temporary workers is 126, then what is the number of total workers?

If ABC is an equilateral triangle and P, Q, R respectively denote the middle points of AB, BC, CA, then 

If $$ {tan3A=cot{(2A+40)}}$$ then find the value of $$ {tan^2{3A}}+{cot^{4}3A}$$.

Directions : The graph shows the demand and production of different companies. Study the graph and answer the following questions.

What is the second large demand company?

The average of four consecutive odd numbers is 36. What is the smallest of these numbers?

The product of two numbers is 45 and their difference is 4. The sum of squares of the two numbers is

For what value of 'm ' the points A ( m + 1 , 1 ) , B ( 2m + 1,3 ) and C ( 2m + 2 , 2m ) are collinear . 

A student got 30% marks in an examination and failed because he got 12 marks less. Another student got 40% marks in the same examination and got 18 marks more than the minimum passing marks. Must have marks to pass