Question

Multiple choice questions

A section of class 7th consists of 45 students out of which 15 are boys and rest are girls. Find the probability that a student chosen at random is a girl.
A) 15/45
B) 2/3
C) 3/45
D) 15/30

The six faces of a cube are numbered from 1 to 6 . The cube is rolled. What is the chance that it will land with a 4 up?
A) 4/6
B) 1/5
C) 1/6
D) 1/4

When a fair die is rolled once than what is the probability of getting a number multiple of 4 ?
A) 1/6
B) 5/6
C) 2/3
D) 1/3

A coin is tossed 20 times. The number of times head occured and tail occurred is 12 and 8 respectively. What is the probability that a tail will turn up on the coin?
A) 3/5
B) 2/5
C) 8/21
D) 4/7

A probability of getting a number less than or equal to 6 when a die rolled is :
A) 0
B) 6
C) 1/6
D) 1

PLEASE DO IT ​

Answer 1

1)total number of students = 45

total number of boys =15

total number of girls =45-15= 30

probability of getting a girl = 30/ 45

= 2/3

probability of getting a boy = 15/45

option(A)

2)P ( landing with 4 up ) = 1 / 6

option (C)

3) option (A)

4)total outcomes = 20

favourable outcomes = 20 - 12 = 8

probability = 8/20 = 2/5

option (B)

5) option (D)

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