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Q.101 Medium Amazon Questions Amazon

A man's age is 3 times his son's age. After 10 years, his age will be 2 times his son's age. What is the son's current age?

A 8 years

B 10 years

C 12 years

D 15 years

Correct Answer: B. 10 years

EXPLANATION

Let son's age = x. Man's age = 3x. After 10 years: 3x + 10 = 2(x + 10). 3x + 10 = 2x + 20. x = 10

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Q.102 Medium Amazon Questions Amazon

If a sequence is 2, 5, 10, 17, 26, what is the next number?

A 35

B 37

C 39

D 41

Correct Answer: B. 37

EXPLANATION

Differences: 3, 5, 7, 9... next difference is 11. So 26 + 11 = 37

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Q.103 Easy Amazon Questions Amazon

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

A 1/4

B 1/5

C 7/20

D 5/20

Correct Answer: A. 1/4

EXPLANATION

Total balls = 5 + 7 + 8 = 20. Probability of red = 5/20 = 1/4

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Q.104 Medium Amazon Questions Amazon

A shopkeeper marks up goods by 50% and gives a discount of 20%. What is his profit percentage?

A 20%

B 25%

C 30%

D 35%

Correct Answer: A. 20%

EXPLANATION

Let CP = 100. Marked Price = 150. After 20% discount: SP = 150 × 0.8 = 120. Profit = 20%

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Q.105 Easy Amazon Questions Amazon

A person spends 30% of his income on food, 40% on rent, and 20% on utilities. If his remaining income is Rs. 5,000, what is his total income?

A Rs. 45,000

B Rs. 50,000

C Rs. 55,000

D Rs. 60,000

Correct Answer: B. Rs. 50,000

EXPLANATION

Percentage spent = 30 + 40 + 20 = 90%. Remaining = 10% = 5,000. Total income = 5,000 × 10 = Rs. 50,000

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Q.106 Medium Amazon Questions Amazon

Two pipes A and B can fill a tank in 12 hours and 18 hours respectively. If both pipes are opened together, how long will it take to fill the tank?

A 6.5 hours

B 7.2 hours

C 8.5 hours

D 9 hours

Correct Answer: B. 7.2 hours

EXPLANATION

Rate of A = 1/12 per hour. Rate of B = 1/18 per hour. Combined rate = 1/12 + 1/18 = 3/36 + 2/36 = 5/36. Time = 36/5 = 7.2 hours

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Q.107 Easy Amazon Questions Amazon

If the cost price of an item is Rs. 400 and it is sold at a loss of 15%, what is the selling price?

A Rs. 340

B Rs. 350

C Rs. 360

D Rs. 380

Correct Answer: A. Rs. 340

EXPLANATION

Loss = 15% of 400 = 60. Selling Price = 400 - 60 = Rs. 340

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Q.108 Medium Cognizant Questions Cognizant

If a car travels at 60 km/h for 2 hours and 40 km/h for 3 hours, what is the average speed?

A 48 km/h

B 50 km/h

C 52 km/h

D 54 km/h

Correct Answer: A. 48 km/h

EXPLANATION

Total distance = 60×2 + 40×3 = 120 + 120 = 240 km. Total time = 2 + 3 = 5 hours. Average = 240/5 = 48 km/h

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Q.109 Easy Cognizant Questions Cognizant

What is 15% of 80?

A 10

B 12

C 15

D 20

Correct Answer: B. 12

EXPLANATION

15% of 80 = 0.15 × 80 = 12

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Q.110 Easy Cognizant Questions Cognizant

In the number 52,347, what is the place value of 3?

A 3

B 30

C 300

D 3000

Correct Answer: C. 300

EXPLANATION

In 52,347, the digit 3 is in the hundreds place, so its place value is 300

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