Aptitude Preparation Questions and Answers for Competitive Exams

Selective Aptitude Preparation Questions and Answers:

Q.11.Ganesh, Ram and Sohan together can complete a work in 16 days. If Ganesh and Ram together can complete the same work in 24 days. The number of days Sohan alone takes, to finish the work is

 (A) 40
 (B) 48
 (C) 32
 (D) 30
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Q.12. A shop keeper allows 20% discount on the marked price on his articles. Find the marked price of an article for which he charges 740

 (A)  725
 (B)  875
 (C)  925
 (D)  1040
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Q.13.Seven years ago, the average age of A, B and C was 51 years. If A is 3 years older than B and B is 3 years older then C then the present ages of A, B and C are ( in year) 

 (A) 61, 58 and 55
 (B) 54, 51, and 48
 (C) 55, 58, and 61
 (D) 48, 51 and 54

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Q.14.If O is the centre of a circle of radius 5 cm. At a distance of 13 cm from O, a point P is taken. From this point, two tangents PQ and PR are drawn to the circle. Then , the area of quadrilateral PQOR is 

 (A) 60 cm2
 (B) 32.5 cm2
 (C) 65 cm2
 (D) 30 cm2

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Q.15.The difference between compound interest and simple interest on Rs. 5000 for 2 years at 8% per annum payable yearly is 

 (A) Rs.30
 (B) Rs.31
 (C) Rs.33
 (D) Rs.32
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Q.16. A, B and C are three points on a circle with centre O. The tangent at C meets BA produced at T. If ∠ATC = 30° and ∠ACT = 48°,then what is the value of ∠AOB ?

 (A) 78°
 (B) 96°
 (C) 102°
 (D) 108°
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Q.17.If a2 + b2 + c2 = 14 and a + b + c = 6, then the value of (ab + bc + ca) is,

 (A) 11
 (B) 12
 (C) 13
 (D) 14
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Q.18.A truck covers a distance of 550 metres in one minute where as a bus covers a distance of 33 km in 3/4 hours. Then the ratio of their speeds is

 (A) 1:3
 (B) 2:3
 (C) 3:4
 (D) 1:4

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Q.19.The radius of base of a right circular cone is 6cm and its slant height is 10cm. Then its volume is
 (use Π = 22/7 ) 

 (A) 301.71 cm3
 (B) 310.71 cm3
 (C) 301.17 cm3
 (D) 310.17 cm3
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Q.20.The orthocentre of an obtuse-angled triangle lies

 (A) inside the triangle
 (B) outside the triangle
 (C) on one side of a triangle
 (D) none of these
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