Bank Clerk Numerical Ability

What should come in place of question mark (?) in the following questions ?

51. 832.456-539.982-123.321=?
(1) 196.153
(2) 149.153
(3) 169.153
(4) 176.135
(5) None of these

Po Math Sample paper

1. A clock shows the time as 6 a.m. If the minute hand gains 2 minutes every hour, how many minutes will the clock gain by 9 p.m.?
(a) 30 minutes
(b) 25 minutes
(c) 28 minutes
(d) 34 minutes