Question

Sum of digits of a 2 digit number is 12: Find the probability that such a number is odd.
Find the probability that such a number is less than 30​

Answer 1

Answer:

7+5=12

Step-by-step explanation:

Answer 2

Sum of digits of a 2 digit number is 12

Therefore,

S={39,48,57,66,75,84,93}

n(S)= 7

1 ] A is the event to get odd number

A ={ 39 , 57, 75, 93}

n(A)= 4

P(A)= n (A)/n(S)

= 4/7

2] B is the event to get the number less than 30.

B = { }

n(B)= 0

P(B)=0

I hope this helps you..