How many squares are in a 4 by 4 grid?

(a)  

If it takes 5 people to paint a house in 10 days, how many people will it take to paint 10 houses in 10 days?

(a)  

Calculate the sum of every odd numbers from 1 to 20.

(a)  

How many different paths are there from Point A to Point B if you can only move up and to the right?

(a)  

How many total diagonals are there in a 10-sided polygon?

(a)  

If the perimeter of a rectangle is 24, what is the largest possible area of this rectangle?

(a)  

If a rectangle has area of 15, what is the largest possible perimeter for this rectangle?

(a)  

How many digits did I use to label page numbers of a book with 120 page?

(a)  

I used 69 digits to label the pages of a book. How many pages are there in the book?

(a)  

If a whole number between 100 and 999 has three different non-zero digits, what is the least possible value of the sum of its digits?

(a)  

An equal number of pennies, nickels, and dimes have a combined total value of $2.40. What is the total value of the nickels, in cents?

(a)  

Of the first 100 whole numbers, how many numbers use the digit 2 at least once?

(a)  

After each of the 50 cards is marked with a different number from 1 through 50, the cards are then paired at random. At most how many of these 25 pairs have a sum of 25?

(a)  

In how many different ways can six identical coins be distributed among Angela, Bel, and Ellia?

(a)