Doing the first one...
Let 10^10 = R
=> 10^30 mod(10^10 + 3) = R^3 mod (R+3) = (-3)^3
=> 10^30 = (10^10+3)*D - 27
Highest power of 2 shd be 3..as no other values give a perfect remainder..

x/x+1
=1-1/x+1
now
now
1/x+1n range is
(-infinity,0)U(0,infinity)
so
1-1/x+1 will lie between
(-infinity,1)U(1,infinity)

Paper is on a easier side
My score
Sec1 86 30A 29C 1W
Sec2 50 30A 20C 10W - VA still haunts me :splat:
Overall 136.

After many average mocks this is a confidence booster for me.

thegodfather321 Says

mere bhai, kabhi bhi de de. koi tension ki baat nahi. of course, itna to clear hi hoga ki ab tu center pe jaake nahi de sakta. ab tujhe url ko manipulate karke ghar pe hi dena padega.:splat::splat:

abhi2luv..

The qstn says Dany walked on each bridge exactly once. And that's the point you need to keep in mind. Also he visited Pentagon five times.

The three cases are depicted in the attachment.