Aptitude and Reasoning Questions

Q:

The two roots of a quadratic equation are given as x = 1/7 and x = -1/8 . The equation can be written as:

A) (7x − 1)(8x − 1) = 0 B) (7x − 1)(8x + 1) = 0
C) (7x + 1)(8x − 1) = 0 D) (7x + 1)(8x + 1) = 0
 
Answer & Explanation Answer: B) (7x − 1)(8x + 1) = 0

Explanation:
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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , CAT

0 1955
Q:

The average marks of 40 students in an examination was 34. It was later found that the marks of one student had been wrongly entered as 62 instead of 26. what is the correct average?

A) 33.1 B) 33.3
C) 33.5 D)  33.7
 
Answer & Explanation Answer: A) 33.1

Explanation:
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Filed Under: Average
Exam Prep: Bank Exams

4 1954
Q:

A company reduces his employee in the ratio 14 : 12 andincreases their wages in the ratio 16:18. Determine whetherthe bill of wages increases or not and in what ratio

A) Decreases, 28: 27 B) Increases, 27:28
C) Decreases, 29:28 D) Increases, 28:29
 
Answer & Explanation Answer: A) Decreases, 28: 27

Explanation:

Let the initial employee be 14a and final employee be 12a

similarly initial wage is 16b and final wage be 18b

Total initial wage = 14a × 16b = 224ab,

total final wage= 12a × 18b = 216ab

So clearly wages decreases and ratio = 224ab: 216ab= 28 : 27

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Filed Under: Ratios and Proportions

0 1954
Q:

The average of three consecutive odd numbers is 52 more than 1/3rd of the largest of these numbers. What is the smallest of these numbers?

A) 79 B) 75
C) 81 D) 77
 
Answer & Explanation Answer: D) 77

Explanation:
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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

4 1953
Q:

A rectangular red carpet of size 6 ft ×12 ft has a dark red border 6 inches wide. What is the area of the dark red border?

 

A) 9 square feet B) 15 square feet
C) 17 square feet D) 18 square feet
 
Answer & Explanation Answer: C) 17 square feet

Explanation:
Initially carpet is 6×12 = 72 sq feet
Since red border is 6 inches wide from all 4 side
So area without border = 5× 11 = 55 sq feet
Area of border = total–area without border = 72–55 = 17 sq feet
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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

1 1953
Q:

In the following question, select the odd word from the given alternatives.

A) Ludo B) Chess
C) Polo D) Carrom
 
Answer & Explanation Answer: C) Polo

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 1953
Q:

The cost of leveling a triangular piece of land whose sides are 72 m. 30 m and 78 in respectively at the rate of 20 paisa per square metre is:

A) ₹ 220 B) ₹ 200
C) ₹ 216 D) ₹ 210
 
Answer & Explanation Answer: C) ₹ 216

Explanation:
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Filed Under: Area
Exam Prep: AIEEE , Bank Exams , CAT

2 1953
Q:

16/3 =

A) 5.33 B) 6
C) 5.74 D) 5.68
 
Answer & Explanation Answer: A) 5.33

Explanation:

16/3 = 5.333.. = 5.3

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Filed Under: Decimal Fractions
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

2 1953