A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

Find the next number in the sequence

5 12 24 36 ?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Next Number in the Series,

5, 16, 49, 104, ?