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A fair coin is tossed $10$ times. What is the probability that $\text{ONLY}$ the first two tosses will yield heads?

1. $\left(\frac{1}{2}\right)^{2}$
2. ${ }^{10} C_{2}\left(\frac{1}{2}\right)^{2}$
3. $\left(\frac{1}{2}\right)^{10}$
4. ${ }^{10} C_{2}\left(\frac{1}{2}\right)^{10}$