If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

What is the next number in this matchsticks series riddle?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

Can you make four (4) nines (9) equal 100?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes