What has no start, end, or centre?

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 ?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Replace The Question Mark Below With the Correct Number.

2 {38} 3
4 {1524} 5
6 {3548} 7
8 {????} 9

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

If you say my name, I will no longer exist. What am I?