By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

What is the largest number you can write with just 3 digits?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

What happened when the wheel was invented?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?