You have two red and two blue blocks. How many different towers can you build that are four blocks high using these blocks? List all the possibilities.

How many Triangles are there in each of the following figures?

Find the number of dots in the tenth figure of the following patterns.

How many Triangles are there in each of the following figures?

How many Triangles are there in each of the following figures?

Find the number of dots in the tenth figure of the following patterns.

Using the numbers from 1 to 9
(i) Can you form a magic triangle?
(ii) How many magic triangles can be formed?
(iii) What are the sums of the sides of the magic triangle?

Arrange the odd numbers from 1 to 17 without repetition to get a sum of 30 on each side of the magic triangle.

Put the numbers 1, 2, 3, 4, 5, 6, & 7 in the circles so that each straight line of three numbers add up to the same total.

Place the number 1 to 12 in the 12 circles so that the sum of the numbers in each of the six lines of the star is 26. Use each number from 1 to 12 exactly once. Find more possible ways?

Find the minimum number of straight lines used in forming the following figures.