If a number of two digits is formed with the digits 2, 3, 5, 7, 9 without repetition of digits, what is the probability that the number formed is 35?

\frac{1}{10}

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\frac{1}{20}

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\frac{2}{11}

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\frac{1}{11}

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Solution

The correct option is B $\frac{1}{20}$
$T o t a l t w o d i g i t n u m b e r s f o r m e d =^{5} P_{2} = 20$

$S o p r o b a b i l i t y o f t h i s n u m b e r b e i n g 35 i s \frac{1}{20}$

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