Question

Complete the number series: 4,9,19,39,.....

Answer 1

Answer:

9-4=5

19-9=10

39-19=20

Now, difference are in GP

i.e.

10/5=20/10=2

Therefore, next difference will be 20×2=40

Next number = 79

Similarly number next to 79 = 79+80=179

Step-by-step explanation:

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Answer 2

Answer:

4,9,19,39,79 is the answee

Step-by-step explanation:

4+5=9

9+10=19

19+20=39

39+40=79

so, these are doubles hope you get the series .

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