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ad atters(c) 2,3(d) none of theseA single letter is selected at random from the wordPROBABILITY. The probability that it is a vowel is(a) 3/11(b) 4/11(c) 2/11(d) none of these78. Three letters are written to different persons andaddresses to three envelopes are also written. Withoutlooking at the addresses, the probability that the letters gointo right envelopes is(a) 1/27(b) 1/6SAthethe1) isbis

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