NTT Data Probability Quiz -1

P(A ∪ B) = P(A) + P(B) - P(A∩B)

=> P(A ∪ B) = 0.5 +0.22 -0.15 = 0.57

Required Probability = \frac{15}{15+23+22} = \frac{15}{60} = \frac{1}{4}

Sample Space = {1,2,3,4,5,6}

Natural Numbers = {1,2,3,4,5,6}

Required Probability = 1

There are 4 kings in a pack of cards

Required Probability =  \frac{4}{52} = \frac{1}{13}

Perfect numbers are the positive integers that are equal to sum of its factors except for the number itself.

Sample Space = {1,2,3,4,5,6}

6 is only perfect numbers in {1,2,3,4,5,6}

Required Probability = \frac{1}{6}

Probability of having either an orange or a Red bulb = \frac{18}{12+18+22} + {22}{12+18+22}= \frac{40}{52} = \frac{10}{13}

No of days in week = 7

Day With The Letter “S” or “T” in a week = Saturday, Sunday,Tuesday, Thursday

Required Probability =  \frac{4}{7}

Number of Female Employees = 12

Probability that the one called is a Female Employees = \frac{12}{23+12} = \frac{12}{35}

The probability that India will win against both Teams = 0.4 \times 0.2 = 0.08

Probability of winning of Team X against Team A =  0.40

probability of winning of Team Y against Team B =  0.30

Probability of not wining of Z against Team C = 1 - 0.60 = 0.40

Required probability = 0.40 x 0.30 x 0.40 = 0.048