When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

How many triangles can you find in this given picture?

When can we add 2 to 11 and get 1 as the correct answer?

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Out of three Friends John, Jacob and Jonny one of them is a king, one is a bureaucrat, and one is a Spy.

The king always tells the truth, the bureaucrat always lies, and the Spy can either lie or tell the truth.

John says: Jonny is a bureaucrat
Jacob says: John is a king
Jonny says: I am a Spy

Tell me, Who is the king, who is the bureaucrat, and who is the Spy?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?