Question

My classroom has 11 rows of chairs, with 11 chairs in each row. The chairs in each row are numbered from 1 to 11. How many chairs have odd numbers?

Answer 1

Answer: We can find this by finding how many odd numbers are in one row since each row is numbered 1 to 11 so by counting we find:

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ...

That there are exactly 6 odd numbers in one row, So 6 time's how many rows there are will equal our product, which equals our answer.