Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

In the given picture, in how many ways can you read the word "Tiger"?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

Find the missing number in the sequence below:

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?

Which is heavier: a ton of bricks or a ton of feathers?