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Find the numerical co-efficient of the following terms. Also, find the co-efficient of x and y in each of the following term.
 
S.No
Term
Numerical co-efficient
Co-efficient of x
Co-efficient of y
(i)
3x
(ii)
-5xy
(iii)
-yz
(iv)
7xyz
(v)
y
(vi)
16yx
 
(Note: Write "Not possible" if there are no co-efficients.)