27. A bag contains 3 blue, 2 white and 4 red balls. If a ball is drawn at random from the box, what is the probability of getting a blue ball ? / एक बैग में 3 नीली, 2 सफेद और 4 लाल गेंदें हैं। यदि बॉक्स से यादृच्छिक रूप से एक गेंद निकाली जाती है, तो नीली गेंद मिलने की प्रायिकता क्या है?
2/3
4/9
1/3
2/9
Answer / उत्तर -1/3
explanation / स्पष्टीकरण :-
Total number of balls = 3 + 2 + 4 = 9
Selecting 1 balls out of 9 balls of the bag = C
Selecting 1 balls out of 3 blue balls = C
∴ Required probability = C / C
⇒ 3/9
⇒ 1/3
∴ The probability of getting a blue ball is 1/3
explanation / स्पष्टीकरण :-
Total number of balls = 3 + 2 + 4 = 9
Selecting 1 balls out of 9 balls of the bag = C
Selecting 1 balls out of 3 blue balls = C
∴ Required probability = C / C
⇒ 3/9
⇒ 1/3
∴ The probability of getting a blue ball is 1/3
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