Data Interpretation

LSSSSB Non-Technical · Mathematics · 100 practice questions with answers and explanations: 38 Easy, 62 Medium, 0 Hard.

Sample questions

Sample Easy question 1

Out of 180 candidates, 60% passed. How many failed?

  1. 74
  2. 70
  3. 68
  4. 72
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Answer: D. Passed = 108, failed = 180 - 108 = 72.

Sample Easy question 2

A survey of 400 people found 45% prefer tea. How many prefer tea?

  1. 170
  2. 175
  3. 185
  4. 180
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Answer: D. 45% of 400 = 180.

Sample Easy question 3

A survey of 500 people found 62% prefer coffee. How many prefer coffee?

  1. 305
  2. 312
  3. 310
  4. 308
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Answer: C. 62% of 500 = 310.

Sample Medium question 4

In a city of 40,000 households, 25% own a car. Among car owners, 25% own two or more cars. How many households own two or more cars?

  1. 2400
  2. 2600
  3. 2500
  4. 2350
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Answer: C. Car owners = 25% of 40,000 = 10,000; two-or-more = 25% of 10,000 = 2,500.

Sample Medium question 5

A test has 200 questions. A student attempted 90% and got 70% of those correct. How many correct answers did they get?

  1. 120
  2. 129
  3. 123
  4. 126
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Answer: D. Attempted = 180, correct = 70% of 180 = 126.

Sample Medium question 6

A test has 240 questions. A student attempted 75% and got 80% of those correct. How many correct answers did they get?

  1. 147
  2. 141
  3. 138
  4. 144
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Answer: D. Attempted = 180, correct = 80% of 180 = 144.

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