How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

I make two people out of one. What am I?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

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

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

Find the missing number in the sequence below:

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

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