HI,
1.123
REASON:
P-16,A-1,L-12,A-1,M-13
16+1+12+1+13=43.
Same way is followed for this question.
2.46
REASON:
z=52(Actually z=26.Here it is given as 26+26=52).
Same way is followed for this question.
3. 9
REASON:
Code=Number of letters-1.
BELEIVED:Number of letters=8
8-1=7 which is the code.
4.