A coin is tossed 10 times. The probability of getting exactly six heads is:
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The probability distribution of a discrete random variable X is given below:
The value of k is:$\text{X}$ $2$ $3$ $4$ $5$ $\text{P}(\text{X})$ $\frac{5}{\text{k}}$ $\frac{7}{\text{k}}$ $\frac{9}{\text{k}}$ $\frac{11}{\text{k}}$