What's the next in the series?

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

What number divided by 4 is the same as that number minus 4?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

Which English verb becomes past tense just by rearranging the letters?

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?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

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

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?