Q: In an experiment, four quantities a, b, c and d are measured with percentage error 1 %, 2% , 3% and 4% respectively. Quantity P is calculated as follows

$ \displaystyle P = \frac{a^3 b^2}{c d} $ . The percentage Error in P is

(a) 14%

(b) 10%

(c) 7%

(d) 4%

Ans: (a)