Unable to understand

#1

can’t figure out the ans

#2

Please share the question and options.

#3

Which one line function can be used to get index of the least significant bit that is on (first 1 from right to left in binary representation of an integer) ?

#4

options : log2( N ^ -N ) + 1 , log2( N | -N ) + 1,log2( N & -N ) + 1,log2( N ~ -N ) + 1

#5

Please refer to this link.