question 10 of chapter 15 class 10th
Answers
Answer:
Given: Number of 50 paise coins = 100
Number of 1 rupee coins = 50
Number of 2 rupee coins = 20
Number of 5 rupee coins = 10
So, total number of coins = 100 + 50 + 20 + 10 = 18O
(2) Probability of not 5 rupee coin = 1 - Probability of 5 rupee coin
= 1 - Number of 5 rupee coins/total number of coins = 1 - 10/180 = 1 - 1/18 = 17/18..
Step-by-step explanation:
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Answer:
The answer is -
Step-by-step explanation:
As we know that
Probability = number of observation/total number of observation
So,
i) probability of getting 50p coins is
As given in the question piggy bank has 100 50p coins and totally it has 100 50p coins, 50 1 rupee coins, 20 2 rupee coins and 10 5 rupee coins
Number of observation for getting 50p coins = 100
Total number of observation = 100 + 50 + 20 + 10
= 180
As,
Probability = number of observation/total number of observation
probability of getting 50p coins = 100/180
= 10/18
= 5/9
ii)it can be 5 rupee coin
probability of getting 5 rupee coins
As given in the question piggy bank has 10 5 rupee coins and totally it has 100 50p coins, 50 1 rupee coins, 20 2 rupee coins and 10 5 rupee coins
Number of observation for getting 5 rupee coin = 10
Total number of observation = 100 + 50 + 20 + 10
= 180
Probability = number of observation/total number of observation
probability of getting 5 rupee coins = 10/180
= 1/18
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