Two radioactive nuclei P and Q, in a given sample decay into a stable nucleus R. At time t =0, number of P species are 4 N_0 and that of Q are N_0.…

Two radioactive nuclei P and Q, in a given sample decay into a stable nucleus R. At time $\displaystyle \mathrm{t}=0$, number of P species are $\displaystyle 4 \mathrm{~N}_0$ and that of Q are $\displaystyle \mathrm{N}_0$. Half-life of P (for conversion to R) is $\displaystyle 1$ minute whereas that of Q is $\displaystyle 2$ minutes. Initially there are no nuclei of R present in the sample. When number of nuclei of P and Q are equal, the number of nuclei of R present in the sample would be -