Igcse Model Questions Vol1 2020 Mathematics Question 2

Practice objective / multiple choice question 2 from the 2020 Igcse Model Questions Vol1 Mathematics examination.

Igcse Model Questions Vol1 2020 Mathematics Objective / Multiple Choice Hard Difficulty
Question 2 IGCSE_MODEL_QUESTIONS_VOL1 • 2020 • MATHEMATICS • objective

A student guesses randomly on 10 multiple‑choice questions, each having 4 options. (a) Find the probability that the student gets exactly 3 questions correct. (b) Given that the student gets at least one question correct, find the probability that they got exactly 3 correct.

Answer Options

A. a) 262440\/1048576 \(\approx 0.2500\); b) 262440\/989527 \(\approx 0.2653\)
B. a) 262440\/1048575 \(\approx 0.2503\); b) 262440\/989527 \(\approx 0.2653\)
C. a) 262440\/1048576 \(\approx 0.2503\); b) 262440\/989527 \(\approx 0.2600\)
Correct Answer D. a) 262440/1048576 \(\approx 0.2503\); b) 262440/989527 \(\approx 0.2653\)
Correct Answer
D
Correct Option:
a) 262440/1048576 \(\approx 0.2503\); b) 262440/989527 \(\approx 0.2653\)

About This Question

This is Igcse Model Questions Vol1 2020 Mathematics Question 2. It is one of the objective questions from the 2020 Igcse Model Questions Vol1 Mathematics examination.

Difficulty level: Hard .

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