In a basket of fruits, there are 6 grapes, 11 bananas, and 13 oranges. If one fruit is chosen at random, what is the probability that the fruit is either a grape or a banana?

Calculate the interior angle of a 5 - sided regular polygon

A banker spent \(\frac{1}{5}\) of his salary on shirts,  \(\frac{1}{3}\) of the remainder on transport, and kept the rest for contingencies. What fraction was left

Find the probability of getting an even number in a single throw of a six-sided die.

Integrate y = 4x\(^3\) + 2x + cos x.