Roshan wanted to type the first 190 whole numbers. Find the number of times he had to press the numbered keys.

Roshan wanted to type the first 190 whole numbers.Find the number of xx he had to press the numbered keys.

Rahul wanted ot type the first 180 natural numbers. Find the number of times he had to press the numbered keys.

The median of the first 10 whole numbers is

Find the mean of the first five whole numbers.

Find the mean of the first five whole numbers.

What is the mean of the first 20 whole numbers?

Raj wanted to type the first 200 natural numbers,how many xx does he have to press the keys