Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

A convention is held where all the big logicians are summoned. The master places a band on everyone's forehead. Now all of them can see others bands but can't see his own. Then they are told that there are different colours of bands. All the logicians sit in circle and they are further explained that a bell will ring at regular intervals. The moment when a logician knew the colour of band on his forehead, he will leave at the next bell. If anyone leaves at the wrong bell, he will be disqualified.

The master assures the logicians that the puzzle will not be impossible for anyone of them. How will the logicians manage ?

Which fur should we be getting from the Lion?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Find the number of squares in the below picture

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Make a sentence consisting of three words that have the whole alphabet.