Probability Test

Result

Probability Test - 15

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Weekly Quiz Competition

Question 1
1 / -0

A letter is chosen at random from the word 'ASSASSINATION'. What is the probability that it is a consonant?

A
4/13

B
8/13

C
7/13

D
6/13

Solution

Total Number of letters in the word ASSASSINATION, n(S) = 13

Total number of consonants in the word ASSASSINATION = 7

P(consonant) = 7/13
Question 2
1 / -0

The total number of events of throwing 10 coins simultaneously is

A
1024

B
512

C
100

D
10

Solution

Total events 2¹⁰ = 1024
Question 3
1 / -0

The letters of the word SOCIETY are placed at random in a row. The probability of getting a vowel is

A
1/7

B
2/7

C
3/7

D
4/7

Solution

Total letters = 7

No. of vowel = 3 [∵ Vowel are O, I, E]

∴ P(a vowel) = 3/7
Question 4
1 / -0

The probability that a non-leap year selected at random has 53 Sundays is

A
1/365

B
2/365

C
2/7

D
1/7

Solution

Number of a non-leap year = 365

Number of Sundays = 53

In a leap year, there are 52 weeks or 364 days

One day is left

Now we have to find the probability of a Sunday out of remaining 1 day

Probability = 1/7