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A physical quantity P is related to four...

A physical quantity `P` is related to four observable physical quantities `a,b,c` and d as `P=(ab^((1)/(2)))/(cd^((3)/(2)))`.The percentage error in measurement of a, b ,c and d are 1%, 2%,1% and 2% respectively. What can be the maximum percentage error in quantity P?
a) ` 4%`
b) `6%`
c) `9%`
d) `2%`

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