1.Activity of a radioactive sample decreases to 13\frac{1}{3}31rd of its original value in 3 days. Then in 9 days its activity reduces toa.118\frac{1}{18}181 of the original valueb.19\frac{1}{9}91 of the original valuec.127\frac{1}{27}271 of the original valued.13\frac{1}{3}31 of the original valueLogin to continueOnly logged in users canattempt or see the solution.
