What goes up but never comes down?

Why is the longest human nose just 11 inches?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

Can you count the number of triangles in the given picture?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

If 21x = 79x, what is the value of x?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

In a certain bank, a man deposits a certain amount. According to the bank policies, the amount will be doubled up in a year but as the service charge, they will also deduct Rs. 65 by the end of every year.

If after the 6th year, the amount becomes 0, what do you think is the original amount he deposited in the bank?