IBPS RRBs Officer Scale II and III Sep 2013 Paper

(2)
It is improper to use Past Participle (seen) here. When we use ‘No sooner ...... than’the structure of the sentence is :
No sooner did he see a tiger,than he ran→V1 away.
No sooner did the thief see the police than he ran away.Hence, see the principal approach should be used.