I travel all around the world but always stay in the corner. What am I?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

Why did the Girl throw the butter out of the window?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

What is common among 11, 69, and 88?

What number when divided in half becomes zero?

Which country gets ill every time?

What is the Surname of Barbie Doll?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

Can you divide the below-given shape into four equal and identical pieces?