Find the hidden tiger in the given optical illusion ?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

Replace the question mark with the correct number in the below-given picture?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

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

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.