What's the next in the series?

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

I look at you, you look at me I raise my right, you raise your left. What am I?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognises the three as friends and asks the waiter to return $5 to the men.

The waiter is not only poor at mathematics but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.

Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14. Where has the other $1 gone from the original $15?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

When it is alive we sing, when it is dead we clap our hands. What is it?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

Rearrange the letters in "new door" to make one word.