Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

I shave every day, but my beard stays the same. What am I?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

The host of a game show offers the guest a choice of three doors. Behind one is an expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

What can go through glass without breaking it?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Solve below rebus puzzle?

Do you know who was buried in John's tomb?

What does Alexander the Great and Winnie the Pooh have in common?