Q 1:
1/2 [3log x + 7log y  9log z] 1/2 [5log x + 5log y  9log z] 1/2 [5log x + 7log y  9log z] 1/2 [5log x + 7log y  7log z]

Q 2:
1/2 [7log x + 7log y  12log z] 1/2 [5log x + 5log y  12log z] 1/2 [7log x + 5log y  4log z] 1/2 [7log x + 5log y  12log z]

Q 3:
[4log x + 4log y  6log z] [2log x + 4log y  6log z] [2log x + 4log y  8log z] 1/2 [2log x + 4log y  6log z]

Q 4:
1/2 [3log x + 7log y  3/2 log z] 1/2 [3log x + 5log y  3 log z] [3log x + 7log y  3 log z] 1/2 [3log x + 7log y  3 log z]

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Question 6: This question is available to subscribers only!

