Probability Practice Test 1

Question : 17 of 40

Marks: +1, -0

What is the probability of yielding theminimum amount when two coins areselected simultaneously at random from aPiggy bank containing four 1 rupee coins,three 2 rupees coins and three 5 rupees coins.

$1 / 45$
$2/15$
$7/ 30$
$6 /43$
None of the above

Validate

Solution:

Selecting 1 rupee coins will yield the minimum value.
Favourable outcomes

= ^4C_2={4×3}/{2×1}=6

Total outcomes

= ^10C_2={10×9}/{2×1}=45

Required probability

=6/45=2/15

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