TCS Company Logical Reasoning Letter Arrangement

Each of a b c need a certain unique time to do a certn wrk..c needs 1hr les thn a to cmpt d wrk.wrkng togthr dy requre 30min to cmpt 50percnt of d job.d wrk also gets cmptld if a n b start wrkng tgthr n a leaves aftr 1hr n b wrks fr furthr 3 hrs.hw mch wrk dnes c do per hr

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TCS Other Question
. A,B ,C can do some work in 36days.A and B together do twice as much work as c alone, and A and C together can do thrice as much work as B alone..find the time taken by C to do whole work?
a)96 b)108 c)120 d)72
 How many 6 digit even numbers can be formed from digits 1 2 3 4 5 6 7 so that the digit should not repeat and the second last digit is even?
a)6480 b)320 c)2160 d)720