Solution
The pattern followed is that number of the form $$(5\times2^n)$$ is added where $$n$$ is whole number.
4 $$+$$ $$(5\times2^0)=$$ 9
9 $$+$$ $$(5\times2^1)=$$ 19
19 $$+$$ $$(5\times2^2)=$$ 39
39 $$+$$ $$(5\times2^3)=$$ 79
79 $$+$$ $$(5\times2^4)=$$ 159
=> Ans - (D)
Create a FREE account and get:
- Free SSC Study Material - 18000 Questions
- 230+ SSC previous papers with solutions PDF
- 100+ SSC Online Tests for Free
