Question

A letter of english alphabet is chosen at random determine probability that a letter has not come in the word mathematics

Answer 1

Let,
Sample space be S

S=( total Alphabet is 26)

n(s)= 26

Let,
A be the event of getting not come word mathematics.

A=( Remaining word oi 18)
n(A)= 18

P(A)= n(A)/n(S)

=18/26

=9/13

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