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 ?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

I travel all around the world but always stay in the corner. What am I?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

What number comes next in the series?

5 15 5 18 5 24 14 20 _

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?