BPSC (Bihar PCS) 2018 · Question 142 of 149
Mental Ability
Train speed 144 km/h = 40 m/s; time to cross pole = 150/40 = 3.75 s; per key (D).
Source: Vision IAS
Practice the full BPSC (Bihar PCS) 2018 paper
Timed test with all 149 questions, just like the real exam.
Start test