In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly.
How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly

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?

Why Wine Glass Stem is so long?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Find the missing number in the image below.

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Find the next number in the sequence

5 12 24 36 ?

I have eight fingers and two thumbs but I do not live. What Am I?