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Direction: Study the following information carefully and answer the given questions.
There were some red, some green and some white balls in a bag. Probability of drawing 1 white ball from the bag is $$ {1\over 3}$$ . If there were 6 more red balls in the bag, the probability of getting 1 green ball would have been $$ {1\over 30}$$ less.

Q:

यदि 1 गेंद को इस तरह से निकालने की प्रायिकता $$ {4\over 5}$$ है कि वह हरी नहीं है, तो लाल और सफेद गेंदों की संख्या का योग है

  • 1
    20
  • 2
    30
  • 3
    24
  • 4
    16
  • 5
    इनमें से कोई नहीं
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Answer : 3. "24"

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