Question 6
Arrange 30 squares in a row and colour them black and white following the pattern. How many more black squares than white squares are there?
The English source says “triangles”, but the picture, Vietnamese statement and worked solution use squares. Count squares, continuing the repeating block black, white, black, white, black, black.
The English source says “triangles”, but the picture, Vietnamese statement and worked solution use squares. Count squares, continuing the repeating block black, white, black, white, black, black.