can anybody help me solving these questions
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18.numbers in a die= 1,2,3,4,5,6
P(getting 7)=0/6=0
19.total students=40
no. of boys=15
no. of girls=45-15
=30
P(selecting a girl)=30/40
=3/4
P(getting 7)=0/6=0
19.total students=40
no. of boys=15
no. of girls=45-15
=30
P(selecting a girl)=30/40
=3/4
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HERE ARE YOURS SOLUTIONS;
◆ 18. A fair dice is a dice in which the probability of getting any face is equal.
So, as we know that 7 cannot be in a dice.
Therefore,
Probability = 0.
◆ 19. Let the number of girls are x.
So, according to the given question;
40 = 15 + x
=> x = 40 - 15
=> x = 25
So, the number of girls is 25.
Probability of selecting a girl = Total Number of girls ÷ Total Students
= 25 ÷ 40
= 5 ÷ 8.
So, the probability of selecting a girl is 5/8.
HOPE IT HELPS YOU
ALL THE BEST
◆ 18. A fair dice is a dice in which the probability of getting any face is equal.
So, as we know that 7 cannot be in a dice.
Therefore,
Probability = 0.
◆ 19. Let the number of girls are x.
So, according to the given question;
40 = 15 + x
=> x = 40 - 15
=> x = 25
So, the number of girls is 25.
Probability of selecting a girl = Total Number of girls ÷ Total Students
= 25 ÷ 40
= 5 ÷ 8.
So, the probability of selecting a girl is 5/8.
HOPE IT HELPS YOU
ALL THE BEST
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