NCERT Solutions
Class 12 Maths
Linear Programming
Electric charges

Ex.13.1 Q.13

An instructor has a question bank consisting of 300 easy True/False questions, 200 difficult True/False questions,

500 easy multiple choice questions and 400 difficult multiple choice questions.

If a question is selected at random from the question bank,

what is the probability that it will be an easy question given that it is a multiple choice question?

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