Given \(A = 2^{65}\) and \(B = (2^{64} + 2^{63} + 2^{62} + ... + 2^0)\), which of the following is true?

The sum of third and ninth term of an A.P is 8. Find the sum of the first 11 terms of the progression.

A line from center to circumference of a circle is known as:

A room has floor size of 15 \(\times\) 6 sq.cm. What is the height of the room, if the sum of the areas of the base and roof is equal to the sum of the areas of the four walls?

A bag contains 4 blue, 5 white and 6 green balls. Two balls are drawn at random. What is the probability that one ball is white?

What should come at the place of question mark? 46080, 3840, 384, 48, 8, 2, ?

Two pipes P and Q can fill a tank in 20hrs and 25hrs respectively while a third pipe R can empty the tank in 30hrs. If all the pipes are opened together for 10hrs and then pipe R is closed then in what time the tank can be filled.

The set of all real numbers x for which \(x^2 - |x + 2| + x > 0\), is:

Given ratio are a : b = 2 : 3, b : c = 5 : 2, c : d = 1 : 4. Find a : b : c.