Consider the following statements regarding fundamental particles and their interactions:

1. The pion (${\pi }^{+}$) is a meson consisting of an up ($u$) quark and an anti-down ($\bar{d}$) quark, and it experiences both the electromagnetic and strong nuclear forces.
2. All leptons are fundamental particles that can participate in the weak interaction, but only charged leptons can experience the electromagnetic interaction.
3. The strange quark ($s$) has a baryon number of $+\frac{1}{3}$ and a strangeness of +1.

Which of these statements is/are true?