Elementary Mathematics Quiz - Competitive Exams CDS

Free practice quiz: Elementary Mathematics (Competitive Exams CDS). 66 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is the value of the determinant of the matrix [[2, 3], [4, 5]]?

   1. 10
   2. -2
   3. 2
   4. -10
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   Answer: B. -2

2. If log₁₀ 2 = 0.3010, then the number of digits in 2^64 is:

   1. 21
   2. 19
   3. 20
   4. 22
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   Answer: C. 20

3. What is the remainder when 7^100 is divided by 5?

   1. 3
   2. 1
   3. 4
   4. 2
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   Answer: B. 1

4. If A can complete a task in 9 days and B in 18 days, and they work together, in how many days will the task be completed?

   1. 4.5 days
   2. 7 days
   3. 6 days
   4. 5 days
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   Answer: C. 6 days

5. What is the value of the derivative of x³ at x = 5?

   1. 75
   2. 15
   3. 25
   4. 125
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   Answer: A. 75

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