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# Write the sample space for the experiment of tossing a coin four times.

Last updated date: 20th Jun 2024
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Hint:When a coin is tossed, we can get two sample space: one is head, and another is tail. But when a coin is tossed four times, we can get several options.
We know that, if a coin is tossed for $n$ times, the number of sample space is ${2^n}$.

Complete step-by-step answer:
The given experiment is tossing a coin for four times.
There are only two sides of a coin: head and tail.
Here, we denote head as $H$ and tail as $T$.
We know that, if a coin is tossed for $n$ times, the number of sample space is ${2^n}$.
Here, the coin is tossed for $4$ times, the number of sample space is ${2^4} = 16$
When a coin is tossed for four times, the sample space can be written as:
$\{ HHHH,HTHH,THHH,HTHT, \\ HHHT,HTTH,TTHH,THTH, \\ HHTT,HHTH,TTTH,THHT, \\ HTTT,TTTT,TTHT,THTT\} \\$
Hence, the sample space for the experiment of tossing a coin four times is $\{ HHHH,HTHH,THHH,HTHT, \\ HHHT,HTTH,TTHH,THTH, \\ HHTT,HHTH,TTTH,THHT, \\ HTTT,TTTT,TTHT,THTT\} \\$

Note:A sample space is a collection or a set of possible outcomes of a random experiment. The sample space is represented using the symbol, “$S$”. The subset of possible outcomes of an experiment is called events. A sample space may contain several outcomes which depends on the experiment. If it contains a finite number of outcomes, then it is known as discrete or finite sample spaces.The sample space for a random experiment is written within curly braces “{} “.