Answer
$\frac{1}{128}$
Work Step by Step
When a coin is tossed,
Total outcomes = 2
Favorable outcomes to get tails = 1
Probability of getting tails = $\frac{1}{2}$
When a coin is tossed six times, probability of being all tails = $\frac{1}{2}\times\frac{1}{2}\times\frac{1}{2}\times\frac{1}{2}\times\frac{1}{2}\times\frac{1}{2}\times\frac{1}{2}$ = $\frac{1}{128}$
