RRB JE Mechanical Question Paper 2014 (Set-1) with Answer Key

Let the angle be X
It is given that X is its own complementary angle.
⇒X+X=90 degree
⇒2X=90 degree
⇒X=45 degree
Answer is 45 degree

The pattern is + 3, + 6, + 12, + 24,.....
So, missing term = 46 + 48 = 94.