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In a survey of 400 youngsters aged 16-20 years, it was found that 191 have their voter ID card. If a youngster is selected at random, find the probability that the youngster does not have their voter ID card.

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No. of youngsters n(S) = 400 

No. of youngsters having voter id n(A) = 191 

No. of youngsters do not have their voter id n(B) = 400 – 191 = 209

P(B) = \(\frac{n(B)}{n(S)}=\frac{209}{400}\)

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