Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

It is an eleven letter word.
The first, second, third and fourth letters form a banquet's name.
The fifth, sixth and seventh letters form a car's name.
The eighth, ninth, tenth and eleventh letters form a mode of transport.

Can you identify what word it is?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

Below rebus represent famous DiCaprio movie. Can you name it?

If two's company, and three's a crowd, then whats four and five ?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

How many Watermelons are there in the below picture?

It belongs to you, but other people use it more than you do. What is it?

Solve the mathematical equation in the picture below.