Question
A letter is taken out at random from ‘ROORKEE’ and
another is taken out from ‘BOOKKEEPER’. The probability that they are the same letter isSolution
Hence, B and P are not common and same letters can be R, O, K, E Probability of choosing R = (²C₁)/(⁷C₁) × (¹C₁)/(¹⁰C₁) = 1/35 Probability of choosing O = (²C₁)/(⁷C₁) × (²C₁)/(¹⁰C₁) = 2/35 Probability of choosing K = 1/(⁷C₁) × (²C₁)/(¹⁰C₁) = 1/35 Probability of choosing E = (²C₁)/(⁷C₁) × (³C₁)/(¹⁰C₁) = 3/35 Hence, Required Probability = 1/35+ 2/35+ 1/35+ 3/35 = 7/35 = 1/5
In the following question, a word has been used in sentences in THREE different ways. Choose the option corresponding to the sentences in which the usa...
Directions: These questions have a base word that is used in the statements given below. Choose the option in which the usage of the word is appropriat...
Oust
A. The rebels finally managed to oust the government from power.
B. The door ousts open and the children rushed in.
C. Don't o...
Select the correctly spelt word.
Directions: In each question below, word is used in four different ways. Choose the option in which the usage of the word is INCORRECT or INAPPROPRIATE....
A person unselfishly concerned for or devoted to the welfare of others.
In each question below, word is used in four different ways. Choose the option in which the usage of the word is INCORRECT or INAPPROPRIATE.
(A...
Select the most appropriate synonym of the given word.
Surreptitious
In the given question, a word has been given and there are three ways in which the word has been used, in similar or different forms. You need to see w...
Select the option that can be used as a one-word substitute for the given group of words.
One who studies the occult meanings of numbers and thei...
Relevant for Exams:
