Directions How to Answer

Aptitude Test Topic: Problem Solving

Quantitative questions without Geometry and Data Interpretation.

This section of the test evaluate your understanding of simple arithmetic and mathematical logic based on the arithmetic.

Directions

Solve each problem and indicate the best of the answer choices given.

Numbers

All numbers used are real numbers.

Figures

Figures are drawn as accurately as possible EXCEPT when it is stated in a specific problem that its figure is not drawn to scale. Straight lines may sometimes appear jagged. All figures lie on a plane unless otherwise indicated.

To give the answer click/tap the option alphabet for your answer choice. for correct answer green check and for wrong answer a red cross will appear along with a button to show explanation with or without video of the question answer.

Problem Solving: Overlapping Sets Practice MCQ

Question Statement:

A school has 54 students studying Physics, Chemistry and Biology. 33 study Physics, 25 Chemistry and 26 Biology. 10 study Physics and Chemistry, 9 study Biology and Chemistry while 8 study both Physics and Biology. Equal numbers study all three subjects as those who learn none of the three. how many students are taking all the three subjects?

Explanation:

Correct Answer: B

(33 - 10 - 8 - x) + 10 + (25 - 10 - 9 - x) + 9 + (26 - 8 - 9 - x) + 8 + x + x = 54

(15 - x) + 10 + (6 - x) + 9 + (9 - x) + 8 + 2x = 54

x = 3

Question: 1 Test: 1 of 1 Next Test

Tests

You are taking Aptitude Test No. 1

Each aptitude test is comprised of 10 except the last test which might have fewer than 10 in some topics.

You are at question (MCQ) number 1 and Test Number 1 of Problem Solving: Overlapping Sets. To deal with Problem Solving questions, you must take lesson on the subject. In case of science and Art subjects revise your text books and in case of general aptitude topics take lessons from the topic page.

The question: A school has 54 students studying Physics, Chemistry and Biology. 33 study Physics, 25 Chemistry and .... with options: 2, 3, 5, 7 can be solved with the concepts and understanding of Problem Solving.