Which number comes next in the number series?

2, 9, 30, 93, ?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

Why is the Hole below a Lock?

How can you leave a room with two legs and return with six legs?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

What can go up a chimney down, but can't go down a chimney up?

In the image given, you can find several triangles. Can you count them all?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Six people park their car in an underground parking of a store. The store has six floors in all. Each one of them goes to a different floor. Simon stays in the lift for the longest. Sia gets out before Peter but after Tracy. The first one to get out is Harold. Debra leaves after Tracy who gets out on the third floor.

Can you find out who leaves the lift on which floor?