A fail coin is tossed N times. The probability that head does not turn up in any of the tosses is

1. $${\left( {\frac{1}{2}} \right)^{{\text{N}} - 1}}$$
2. $$1 - {\left( {\frac{1}{2}} \right)^{{\text{N}} - 1}}$$
3. $${\left( {\frac{1}{2}} \right)^{\text{N}}}$$
4. $$1 - {\left( {\frac{1}{2}} \right)^{\text{N}}}$$

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