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A letter is chosen at random from the word ‘ASSASSINATION’. Find the probability that letter is a vowel an consonant

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Question

A letter is chosen at random from the word ‘ASSASSINATION’. Find the probability that letter is

  1. a vowel
  2. an consonant
Sum
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Solution

The word ASSASSINATION has total 13 letters in which (A, A, A, I, I, O) 6 vowels and (S, S, S, S,N, N, T) 7 consonants.

i. n(S) = 13

Number of vowels = 6

Probability of choosing a vowel = `6/13`

ii. Number of consonants = 7

n(S) = 13

Probability of choosing a consonant = `7/13`

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Concept of Probability - Probability of 'Not', 'And' and 'Or' Events
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Chapter 14: Probability - EXERCISE 14.2 [Page 306]

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NCERT Mathematics [English] Class 11
Chapter 14 Probability
EXERCISE 14.2 | Q 10. | Page 306

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