Question

Describe in words the following pattern 4,9,19,39,79

Answer 1

Answer:

Pattern starts with 4 and later adding 5 to it we get 9.

Later we double additional value i.e. 5x2=10 and add it to the previous number. and so on...

So series become

4

9=4+5

19=9+10(5+5)

39=19+20(10+10)

79=39+40(20+20).