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A bag contains red balls and black balls in the ratio $3:7$. A ball is drawn at random. The probability that ball so drawn is black in colour, is
- (a)$\frac{3}{7}$
- (b)0.3
- (c)0.7
- (d)$\frac{1}{7}$
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(C) 0.7
A bag contains red balls and black balls in the ratio 3:7 . A ball is drawn at random. The probability that ball so…
CBSE Class 10 Maths PYQ · Probability · Probability of events · 1 Mark · March 2025 · Standard
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