Can you find the missing piece of the Porsche?

How many letters are in the alphabet?

Replace the question mark in the picture below.

Which word does the below Plexor means ?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

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?

How can you take 2 from 5 and leave 4?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

When is the top of a mountain similar to a savings account?

What number should come in place of the question mark below?