Quantitative Aptitude - Arithmetic Ability Questions

Q:

The area of a square is 100 sq cm, find length of its diagonal?

A) 10√2 cm B) 10 cm
C) 20 cm D) 20√2 cm
 
Answer & Explanation Answer: A) 10√2 cm

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Q:

PQR is a triangle, whose area is 180 cm2. S is a point on side QR, such that PS is the angle bisector of ∠QPR. If PQ : PR = 2 : 3, then what is the area (in cm2) triangle PSR?

A) 90 B) 108
C) 144 D) 72
 
Answer & Explanation Answer: B) 108

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Filed Under: Area
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Q:

Select the odd word from the given alternatives.

A) Football B) Basketball
C) Cricket ball D) Volleyball
 
Answer & Explanation Answer: C) Cricket ball

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Filed Under: Odd Man Out
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Q:

If cotA + cotB = x, then value of x is

A) (cotAcotB + 1)/(cotB - cotA) B) (cotAcotB + 1)/(cotB + cotA)
C) (cotAcotB - 1)/(cotB + cotA) D) (cotAcotB - 1)/(cotB - cotA)
 
Answer & Explanation Answer: C) (cotAcotB - 1)/(cotB + cotA)

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

A starts a business, after 6 months B also join him with Rs.4500 and after 2 months of B’s joining C also join them with Rs.4500. If A gets approx. Rs 4900 out of total annual profit of Rs. 10,000 then find the approximate value of initial investment of A.

A) Rs.4800 B) Rs.4200
C) Rs.3600 D) Rs.4400
 
Answer & Explanation Answer: C) Rs.3600

Explanation:

Let initial investment of A = x
Ratio of profit A : B : C = 12 × x : 6×4500 :4×4500
A :B:C = x : 2250: 1500
Now ATQx/(x+2250+1500) = 4900/10000
solving this we get,x ≈ Rs 3600

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Q:

75 pupils from a school appeared for an examination and 80% of them passed. Another school entered 10 more pupils than the first school and five pupils less than the first school passed. The pass % of in the second school was :

A) 75% B) 84%
C) 72% D) 64.7%
 
Answer & Explanation Answer: D) 64.7%

Explanation:

no of pupils pupil from first school for examination= 75
No. of pupil passed = 80% of 75 = 60
No. of pupil from second school = 85
No .of pupil passed from 2nd school = 55
Pass % from second school = 55/85 X 100 = 64.70%

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Filed Under: Percentage
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Q:

If a=101 then the value of a(a2-3a+3) is 

A) 1000000 B) 1010101
C) 1000001 D) 999999
 
Answer & Explanation Answer: C) 1000001

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Q:

At a village trade fair a man buys a horse and a camel together for Rs 51,250. He sold the horse at a profit of 25 % and the camel at a loss of 20 %. If he sold both the animals at the same price, then the cost price of the cheaper animal was Rs ____________.

A) 6600 B) 7500
C) 25000 D) 20000
 
Answer & Explanation Answer: D) 20000

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Filed Under: Profit and Loss
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