Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

How many triangles can you count in the figure given?

A rain drop fell from one leaf to another leaf and lost 1/4th of its volume. It then fell to another leaf and lost 1/5th of the volume. It again fell on another leaf and lost 1/5th of the volume.



This process kept repeating till it fell on the last leaf losing 1/75th of its volume.



Can you calculate the total percentage of loss from the initial volume when the drop has fallen to the last leaf accurate up to two decimal places?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

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 sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

The cream is heavier than Milk. True or False?

Prove that the below maths equation is true.

8 + 8 = 91