Question

Paula os counting by 9s.Peter is counying by 4s.they pace the counting so that they will say the first common number together.What is the first number they both will say?

Answer 1

the answer is 36
9,18,27,36,45
4,8,12,16,20,24,28,32,36

Answer 2

The first number they will both say will be the least common multiple of 9 and 4.
9,18, 27, 36
4, 8, 12, 16, 24, 28, 32, 36
The first number they will say together is 36.