The given data can be tabulated as
Let us denote E= easy questions, M= multiple choice questions, D= difficult questions, and T= True / False questions.
Total number of questions =1400
Total number of multiple choice questions =900
Therefore, probability of selecting an easy multiple choice questions is
Probability of selecting a multiple choice questions, P(M) is 9001400=914
P(E|M) represents the probability that a randomly selected question will be an easy question, given that it is a multiple choice question.
Therefore, the required probability is 59