Common Multiples are taught in P4 and requires students to be familiar with the multiplication tables.
Such questions often appear in Section C of P4 exam papers.
Rick and Marge are at the bottom of a flight of stairs.
Rick placed a stone at every 3rd step he reached along the stairs.
Marge placed a stone at every 5th step she reached along the stairs.
Marge placed a stone at every 5th step she reached along the stairs.
Which is the first step along the stairs that will contain 2 stones?
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| Spiral Staircase |
If the above question is easy, try to do the more challenging question below.
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