Aptitude and Reasoning Questions

Q:

If (4a +7b) (4c-7d) = (4a -7b) (4c +7d, then which one of the following is correct ?

A) a/b = c/d B) a/d = c/b
C) a/b = d/c D) none
 
Answer & Explanation Answer: A) a/b = c/d

Explanation:

(4a+7b)(4c-7d) = (4a-7b)(4c+7d)

(4a+7b)/(4a-7b) = (4c+7d)/(4c-7d)

Using componendo and dividendo

(4a+7b)+(4a-7b) / (4a+7b)-(4a-7b)

= (4c+7d)+(4c-7d) / (4c+7d)-(4c-7d)

Or 8a/14b = 8c/14d

Or a/b = c/d

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

A woman suffered 20% loss on first investment and made 10% profit at second investment and 12 ½% profit on the third investment. If the invested amount be in the ratio of 4 : 5 : 3, find her profit percentage?

A) 0.625% B) 1.205%
C) 0.987% D) 0%
 
Answer & Explanation Answer: A) 0.625%

Explanation:

From the given data,

let the amounts invested be 4p, 5p and 3p

Net profit = Total profit - Total loss

= 10x5p/100 + 25x3p/200 - 20x4p/100

= 0.875p - 0.8p

= 0.075p

Therefore, profit% = (Net profit/Total investment) x 100

= 0.075 x 100/12 

= 0.0625%

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Filed Under: Percentage
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9 4049
Q:

Select the missing letter from the given options?

A) O B) M
C) K D) P
 
Answer & Explanation Answer: C) K

Explanation:
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Filed Under: Analytical Reasoning
Exam Prep: Bank Exams

7 4048
Q:

Should there be an upper age limit of 65 years for contesting parlimentary/Legislative Assembly elections? 

Arguments:

1. Yes. Generally ,people above the age of 65 years lose their dynamism and will power

2. No. The life span is also increased that people remain physically and mentally active even upto age of 80 years

A) Only 1 is true B) Only 2 is true
C) Either 1 or 2 is true D) Neither 1 nor 2 is true
 
Answer & Explanation Answer: D) Neither 1 nor 2 is true

Explanation:

The age of the person is no criteria for judging his mental capbilities and administrative qualities.So,none of the arguments holds strong

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Q:

The perimeter of a rectangle whose length is 6 m more than its breadth is 84 m. What will be the area of the rectangle?

A) 333 sq.mts B) 330 sq.mts
C) 362 sq.mts D) 432 sq.mts
 
Answer & Explanation Answer: D) 432 sq.mts

Explanation:

Let the breadth of the rectangle = b mts

Then Length of the rectangle = b + 6 mts

Given perimeter = 84 mts

2(L + B) = 84 mts

2(b+6 + b) = 84

2(2b + 6) = 84

4b + 12 = 84

4b = 84 - 12

4b = 72

b = 18 mts

=> Length = b + 6 = 18 + 6 = 24 mts

 

Now, required Area of the rectangle = L x B = 24 x 18 = 432 sq. mts

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Filed Under: Area
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20 4046
Q:

A town having teenagers(boys & girls) of 5000 requires 150 litre of water per head. It has a tank measuring 20 m × 15 m × 5 m. The water of this tank will sufficient for ____ days.

A) 8 B) 6
C) 4 D) 2
 
Answer & Explanation Answer: D) 2

Explanation:

Total Water reqduired = 5000 × 150 lit = 750,000 litres = 750 cu.m.

 

Volume of tank = 20 × 15 × 5 = 1500 Cu.m.

 

Number of days required =1500/750 = 2 days.

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Filed Under: Time and Work
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Q:

Choose the number which is different from others in the group?

A) 380 B) 120
C) 290 D) 168
 
Answer & Explanation Answer: A) 380

Explanation:

Each of the numbers except 380, is either one less or one more than the square of a certain number

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Filed Under: Classification

39 4041
Q:

If ENCRYPT is coded as VMXIBKG, then how will ARC be coded as?

A) PQE B) ZIX
C) ZSX D) QTB
 
Answer & Explanation Answer: B) ZIX

Explanation:
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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

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