Ans 31) .The minimum number is 5 and they should weigh 1,3,9,27 and 81 kgs.

Ans 32). The sixth floor.

Ans 33). Second evening:Vikram,Ankur,Abhishek,Amol,Vasu,Anurag and Bhuwan.
Third evening :Vikram,Anurag,Abhishek,Vasu,Bhuwan,Ankur,Amol.

Ans 34). Mr.East took the North Road
Mr.West took the East Road
Mr.North took the South Road
Mr.South took the West Road.

Ans 35). 12 (as 5*4=20, 20+4=24, 24/4=6, 6-4=2, 2*4=8, 8+4=12).

Ans 36). 0 =1, N = 8 ,E = 2, T = 7

Ans 37). Since Dave spoke to the biologist and Ann sat next to the chemist and across the doctor, Cathy must be the author
and Ann the biologist. The doctor didn’t speak, but David did, so Bobbie is the doctor and Dave the chemist.

Ans 38). Time of shooting = 11:54 PM
Claimed Time = 10:59 PM

Ans 39). 65292

Ans 40). 224.
No number has digits more than 4. All of them are 1 , 2, 4, 8 , 16 , 32 , 64 converted to numbers in base 5