Question

42,45,15,18,6,9,3....

Answer 1

Correct Question:-

Write next no. to the number series.

3,9,6,18,15,45,42....

Answer:

3×3= 9

9-3= 6

In this way the next step should be written. Hope you understand.

Correct Answer:-

42×3= 126

126-3= 123

So, 3,9,6,18,15,45,42,126,123.