Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Prove that the below maths equation is true.

8 + 8 = 91

Which alphabet is a part of our body?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

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

Count the number of squares in the picture below.

Before Mount Everest was discovered, what was the highest mountain in the world?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

81 x 9 = 801. What must you do to make the this equation true?

What is the riddle which can be asked all day with a different correct answer each time.