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Probability
RD Sharma
CBSE
Grade 10

Question:

If a letter of English alphabet is chosen at random, the probability that it is a consonant is:
(a) $\dfrac{21}{26}$
(b) $\dfrac{5}{26}$
(c) $\dfrac{1}{26}$
(d) $\dfrac{1}{2}$

Step-by-Step Solution

Key Concept: Total letters $= 26$, Vowels $= 5$, Consonants $= 21$. $P = \dfrac{21}{26}$.
$P = 21/26$. [1.0 Mark]

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🎯 Official CBSE Marking Scheme:
Evaluating $21/26$: 1.0 Mark

Correct Answer: $\dfrac{21}{26}$
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