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A bag contains 15 one rupee coins, 25 two rupee coins and 10 five rupee coins. If a coin is selected at random from the bag, then the probability of not selecting a one rupee coin is
  • a)
    0.30
  • b)
    0.70
  • c)
    0.25
  • d)
    0.20
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A bag contains 15 one rupee coins, 25 two rupee coins and 10 five rupe...
Given:
- 15 one rupee coins
- 25 two rupee coins
- 10 five rupee coins

To find:
- Probability of not selecting a one rupee coin

Solution:

Total number of coins = 15 + 25 + 10 = 50

Probability of not selecting a one rupee coin = (number of non-one rupee coins) / (total number of coins)

Number of non-one rupee coins = 25 + 10 = 35

Probability of not selecting a one rupee coin = 35 / 50 = 0.7

Therefore, the probability of not selecting a one rupee coin is 0.70 or option B.

Note:
- Probability is the measure of the likelihood of an event occurring.
- The sum of probabilities of all possible outcomes is always equal to 1.
- To calculate the probability of an event, we divide the number of favorable outcomes by the total number of outcomes.
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Community Answer
A bag contains 15 one rupee coins, 25 two rupee coins and 10 five rupe...
P( not selecting a one rupee coin) = 1-p( selecting a one rupee coin) 
=1-15/50
=50-15/50
=35/50
=7/10
=0.7
Therefore probability of not selecting a one rupee coin is 0.7
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A bag contains 15 one rupee coins, 25 two rupee coins and 10 five rupee coins. If a coin is selected at random from the bag, then the probability of not selecting a one rupee coin isa)0.30b)0.70c)0.25d)0.20Correct answer is option 'B'. Can you explain this answer?
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