You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

How is the moon similar to a dollar?

What kind of storm is always in a rush?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

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

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

Can you find out the remainder when 3^300 is divided by 5?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

In which direction should the missing arrow point?