Two numbers \( a, b \) are chosen from the set of integers \( 1,2,3, \ldots, 39 \). Then probabi....

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Two numbers \( a, b \) are chosen from the set of integers \( 1,2,3, \ldots, 39 \). Then probability that the equation
\( \mathrm{P} \)
\( 7 a-9 b=0 \) is satisfied is
W
(1) \( 1 / 247 \)
(2) \( 2 / 247 \)
(3) \( 4 / 741 \)
(4) \( 5 / 741 \)


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