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?

Take one out and scratch my head, I am now black but once was red. What am I?

What does this rebus mean?

O
N
C
E
TIME

What makes this number unique: 8,549,176,320?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.