An unbiased die is tossed until a number greater than $4$ appears. The probability that an even number of tosses is needed is
An unbiased die is tossed until a number greater than $4$ appears. The probability that an even number of tosses is needed is
- [IIT 1994]
- A
$\frac{1}{2}$
- B
$\frac{2}{5}$
- C
$\frac{1}{5}$
- D
$\frac{2}{3}$
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