question_answer 32)

Here are two different factor trees for 60. Write the missing numbers. (a)                (b)                

Answer:

                (a) \[\because \]              \[6=2\times 3\] and \[10=5\times 2\] Hence, missing numbers are 3 and 2.             (b) \[\because \]              \[60=30\times 2\]                 \[30=10\times 3\] and        \[10=5\times 2\]               \[\therefore \] Hence, missing numbers are 5, 2, 3 and 2.