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Mathematics · 2024 · 3 marks
CBSE 2024 · Region 2 · Set 1 · Q30
A pair of dice is thrown simultaneously. If X denotes the absolute difference of the numbers appearing on top of the dice, then find the probability…
A pair of dice is thrown simultaneously. If X denotes the absolute difference of the numbers appearing on top of the dice, then find the probability distribution of X.
Marking-scheme solution
X & $\displaystyle 0$ & $\displaystyle 1$ & $\displaystyle 2$ & $\displaystyle 3$ & $\displaystyle 4$ & $\displaystyle 5$
$\displaystyle \mathrm{P}(\mathrm{X})$ & $\displaystyle \frac{6}{36}=\frac{1}{6}$ & $\displaystyle \frac{10}{36}=\frac{5}{18}$ & $\displaystyle \frac{8}{36}=\frac{2}{9}$ & $\displaystyle \frac{6}{36}=\frac{1}{6}$ & $\displaystyle \frac{4}{36}=\frac{1}{9}$ & $\displaystyle \frac{2}{36}=\frac{1}{18}$
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CBSE Class 12 Mathematics past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.