What four weights can be used to balance from 1 to 30 pounds?

If 1+9+8=1, what is 2+8+9?

What famous saying does this rebus mean?

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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?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Can you write down eight eights so that they add up to one thousand?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?