Find the next number in the series.
1 10 24 43 67 ?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?

Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?