Question

pls.this is,a NTSE question

Answer 1

here is the answer.. .
The missing no is 15.
We have 2nd,5th,8th and 11th no in sequence i.e 2,3,4,5
Similarly 3rd, 6th,9th and 12th no. are 2, 2+3=5, 5+5=10, 10+7=17
Similarly 1st,4th,7th and 10th no.0,0+3=3,3+5=8, 8+7=15.