JEE Main 2022 (Online) 28th June Evening Shift | Probability Question 71 | Mathematics

The probability that a randomly chosen one-one function from the set {a, b, c, d} to the set {1, 2, 3, 4, 5} satisfies f(a) + 2f(b) $$-$$ f(c) = f(d) is :

$${1 \over {24}}$$

$${1 \over {40}}$$

$${1 \over {30}}$$

$${1 \over {20}}$$

JEE Main 2022 (Online) 28th June Morning Shift

MCQ (Single Correct Answer)

-1

The probability, that in a randomly selected 3-digit number at least two digits are odd, is :

$${{19} \over {36}}$$

$${{15} \over {36}}$$

$${{13} \over {36}}$$

$${{23} \over {36}}$$

JEE Main 2022 (Online) 27th June Evening Shift

MCQ (Single Correct Answer)

-1

If a point A(x, y) lies in the region bounded by the y-axis, straight lines 2y + x = 6 and 5x $$-$$ 6y = 30, then the probability that y < 1 is :

$${1 \over 6}$$

$${5 \over 6}$$

$${2 \over 3}$$

$${6 \over 7}$$

JEE Main 2022 (Online) 27th June Morning Shift

MCQ (Single Correct Answer)

-1

Five numbers $${x_1},{x_2},{x_3},{x_4},{x_5}$$ are randomly selected from the numbers 1, 2, 3, ......., 18 and are arranged in the increasing order $$({x_1} < {x_2} < {x_3} < {x_4} < {x_5})$$. The probability that $${x_2} = 7$$ and $${x_4} = 11$$ is :

$${1 \over {136}}$$

$${1 \over {72}}$$

$${1 \over {68}}$$

$${1 \over {34}}$$

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