Week 8 Practice Questions

Question 1

00:00Est. 3 min

Marks:+5.000.00

There are two stores, A and B, which sell t-shirts on the market. Store A has stock of

n

red and

2

black t-shirts, and store B has stock of

2

red and

n

black t-shirts. One of the stores is selected at random and two t-shirts are purchased without replacement from that store. Given that both the t-shirts purchased are red, the probability that they were purchased from store A is

\frac{6}{7}

. Find the value of

n

Integer answer

Medium Difficulty

06 April 2026

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