I have teeth but i don't bite. Who Am I ?

Can you find out what is missing?

1 3 5
2 4 ?

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

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

I have Rs.50 and I spend it in the way as below.

People make me, save me, change me, raise me. What am I?

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles, and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

I have branches, but no fruit, trunk or leaves. What am I?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

I know a nine-letter word having only one vowel.
Do you ?