If eleven plus two equals one, what does nine plus five equal?

Can you count the number of quadrilaterals in the picture below?

Decode below rebus
D
N
A
T
S , D

You can hear me, but you can't touch or see me.

What am I?

You need to arrange three 7 and mathematical symbols to form number 1?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

How many runs at maximum can a batsman score in a normal one-day match? Consider the fact that the conditions are ideal and there are no No Balls, no Wide Balls and no Extras in that match.

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

What does the below rebus riddle means?

People are waiting in line to board a 100-seat aeroplane. Steve is the first person in the line. He gets on the plane but suddenly can't remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it's available, otherwise, they will choose an open seat at random to sit in. The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?