problem
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How Odd
This problem challenges you to find out how many odd numbers there are between pairs of numbers.
This is part of our collection of favourite rich tasks arranged by topic.
If you are a teacher, you can find the whole collection on our Primary Curriculum teacher page.
Alternatively, if you are a student, you'll find the same problems on our Primary Curriculum student page.
This problem challenges you to find out how many odd numbers there are between pairs of numbers.
This problem looks at how one example of your choice can show something about the general structure of multiplication.