Solution
4, 7, 12, 19, (...)
addition of Prime no.
$$4 + 3 = 7$$
$$7 + 5 = 12$$
$$12 + 7 = 19$$
$$19 + 9 = 28$$
28 is a no.
Create a FREE account and get:
- Download RRB Study Material PDF
- 45+ RRB previous papers with solutions PDF
- 300+ Online RRB Tests for Free
