Solve the equation in the image by looking at the pattern closely.

Why do you find that most of the buildings are deprived of the 13th floor?

A sundial has the fewest moving parts of any timepiece. Which has the most?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

Complete the table series riddle by finding the number that can replace "??".

What is the relationship between these matchstick pictures below?

What is next number in the pattern below:

131 517 192 123 ?