If x² + 1/x² = 7, then x + 1/x is:

The correct answer is B: ±3. (x + 1/x)² = x² + 2 + 1/x² = 7 + 2 = 9. So x + 1/x = ±3

If the compound interest on Rs. 10,000 at 10% per annum for 2 years is compound annually, what is the amount?

The correct answer is A: Rs. 12,100. Amount = P(1 + R/100)^n = 10000(1 + 10/100)^2 = 10000(1.1)^2 = 10000 × 1.21 = Rs. 12,100

What will be the output of the following pseudocode? int a = 5, b = 10; while(a < b) { b = b - a; a = a + 1; } print(a, b);

The correct answer is B: 9, 4. Iteration 1: a=5, b=10. b=10-5=5, a=6. Iteration 2: a=6, b=5. b=5-6=-1? No, loop condition a

A bag contains 5 red balls, 7 blue balls, and 8 green balls. What is the probability of drawing a red ball?

The correct answer is A: 1/4. Total balls = 5 + 7 + 8 = 20. Probability of red = 5/20 = 1/4

Which sorting algorithm has the worst-case time complexity of O(n^2)?

The correct answer is C: Bubble Sort. Bubble sort has a worst-case time complexity of O(n^2) when the array is in reverse order.

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Q.31 Easy Capgemini Questions Capgemini

What is 25% of 80% of 500?

A 100

B 150

C 200

D 250

Correct Answer: A. 100

EXPLANATION

80% of 500 = 400. 25% of 400 = 100

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Q.32 Easy Capgemini Questions Capgemini

A work can be completed by 5 men in 12 days. How many days will it take for 8 men to complete the same work?

A 7.5 days

B 8 days

C 9 days

D 6 days

Correct Answer: A. 7.5 days

EXPLANATION

Work = 5 × 12 = 60 man-days. Time for 8 men = 60/8 = 7.5 days

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Q.33 Easy Capgemini Questions Capgemini

In a mixture of 60 liters, the ratio of milk to water is 3:2. How much water is present?

A 24 liters

B 36 liters

C 18 liters

D 12 liters

Correct Answer: A. 24 liters

EXPLANATION

Ratio = 3:2, so total parts = 5. Water = (2/5) × 60 = 24 liters

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