Which number should replace the question mark?

What English word has three consecutive double letters?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

A guard is positioned at the one side of the bridge saying ‘A’. His task is to shoot all those who try to leave from ‘A’ to the other side and say ‘B’. He also need to welcome the person who comes from another side ‘B’ to his side ‘A’. The guard comes out of his post every 1 hour and looks down the bridge for any people trying to leave. You are at side ‘A’ and wish to go to another side ‘B’. you also know that it would take 1:45 hr to cross the bridge. How will you cross the bridge?

An inspection by the superintendent of St. Joseph School was scheduled on the next day. The class teacher Jenifer knew that he would be asking questions from her class and she would have to choose a pupil to answer. To offer a perfect impression over him, the teacher explained certain instructions to the students to maximise the chances of getting correct answer every time.

What did she say to the students?

By using 'because' continuously three times, can you make an English statement ?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?