Question

Q7) describe the chances of occurrence of the following events using the word :impossible, not likely, equally likely most likely certain a) a red marble picked up at random from a bag containing 8red marble and 2 black marble​

Answer 1

Probability that it will rain tomorrow= P(E) = 0.85

Probability that it will not rain tomorrow= P(E¯)

Since the sum of the probability of occurrence of an event and probability of non occurrence of an event is 1,

We know that,

P(E) + P(E¯)= 1

0.85 + P(E¯) = 1

P(E¯) = 1 – 0.85

P(E¯) = 0.15

Therefore, the probability that it will not rain tomorrow is = 0.15

2. A die is thrown. Find the probability of getting:

(i) a prime number

(ii) 2 or 4

(iii) a multiple of 2 or 3

(iv) an even prime number

(v) a number greater than 5

(vi) a number lying between 2 and 6

Solution:

Total number on a dice is 6.

(i) Probability of getting a prime number

Prime numbers on a dice =2,3 and 5

i.e., The total number of prime numbers on dice =3

We know that,

Probability =

Answer 2

Explanation:

A most likely

B equally likely

C equally likely

D impossible

E certain

F not likely

Yes booyah!! we find the answer