Em tham khảo nha :
\(\begin{array}{l}
a)\\
Z = p = 8\\
A = 8 + 10 = 18\\
_8^{18}X\\
b)\\
Z = 6\\
n = 6 + 1 = 7\\
A = 6 + 7 = 13\\
_6^{13}Y\\
c)\\
Z = 1\\
A = 1\\
_1^1Z\\
d)\\
\left\{ \begin{array}{l}
p + n = 55\\
n - p = 5
\end{array} \right.\\
\Rightarrow p = 25,n = 30\\
_{25}^{55}A\\
e)\\
1 \le \dfrac{n}{p} \le 1,5 \Rightarrow 1 \le \dfrac{{13 - 2p}}{p} \le 1,5\\
\Rightarrow 3,7 \le p \le 4,33\\
\Rightarrow p = 4\\
n = 13 - 8 = 5\\
_4^9B\\
f)\\
1 \le \dfrac{n}{p} \le 1,5 \Rightarrow 1 \le \dfrac{{52 - 2p}}{p} \le 1,5\\
\Rightarrow 14,8 \le p \le 17,3\\
\Rightarrow p = 17\\
n = 52 - 17 \times 2 = 18\\
_{17}^{35}C
\end{array}\)
