Question

solve it please solve it​

Answer 1

Step-by-step explanation:

Solution :-

Given that

No. of families who have no girl = 410

No. of families who have 1 girl = 800

No. of families who have 2 girls = 590

Total no. of families = 410+800+590 = 1800

1)

Number of families who have no girl = 410

Number of favourable outcomes = 410

Total number of families = 1800

We know that

Probability of an event P(E) = Number of favourable outcomes/ Total number of all possible outcomes

Probability of getting a family who have no girl

= 410/1800

=> 41/180

2)

Number of families who have 1 girl = 800

Number of favourable outcomes = 800

Total number of families = 1800

We know that

Probability of an event P(E) = Number of favourable outcomes/ Total number of all possible outcomes

Probability of getting a family who have 1 girl

= 800/1800

=> 8/18

=> 4/9

3)

Number of families who have 2 girls = 590

Number of favourable outcomes = 590

Total number of families = 1800

We know that

Probability of an event P(E) = Number of favourable outcomes/ Total number of all possible outcomes

Probability of getting a family who have 2 girls

= 590/1800

=> 59/180

Answer :-

i) Probability of getting a family who have no girl = 41/180

ii) Probability of getting a family who have 1 girl = 4/9

iii) Probability of getting a family who have 2 girls = 59/180

Used formulae:-

→ Probability of an event P(E) = Number of favourable outcomes/ Total number of all possible outcomes

Answer 2

Step-by-step explanation:

Refer to the attachment

hope it will help you a lot