Class 9

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Q1.

$A$ die is thrown $1000$ times and the outcomes were recorded as follows:

Outcome	$1$	$2$	$3$	$4$	$5$	$6$
Frequency	$180$	$150$	$160$	$170$	$150$	$190$

If the die is thrown once more,then the probability that it shows $5$ is:

(A)

$9/50$

(B)

$4/25$

(C)

$3/20$

(D)

$7/25$

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Q2.

If the mean of the observations $x, x+3, x+5, x+7, x+10$ is $9,$ find the mean of the last three observations.

(A)

$10 \frac{1}{3}$

(B)

$10 \frac{2}{3}$

(C)

$11 \frac{1}{3}$

(D)

$11 \frac{2}{3}$

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