Quantitative Aptitude - Arithmetic Ability Questions

Q:

In ΔABC, the angle bisector of ∠A cuts BC at E. Find the length of AC if lengths of AB, BE and EC are 9.6 cm, 4 cm and 3 cm?

A) 4.8 cm B) 9.8 cm
C) 7.8 cm D) 7.2 cm
 
Answer & Explanation Answer: D) 7.2 cm

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

The surface areas of three faces of a cuboid sharing a vertex are 20, 32 and 40 sq. mts. What is the volume of the cuboid in cub. m?

A) √3024 B) 184
C) 160 D) 92
 
Answer & Explanation Answer: C) 160

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

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Q:

In ΔPQR, S and T are points on side PQ and PR respectively. ST is parallel to QR. If lengths of PS, SQ and PR are 6 cm, 9 cm and 12.5 cm respectively, what is the length of TR?

A) 7.5 cm B) 5 cm
C) 10 cm D) 2.5 cm
 
Answer & Explanation Answer: A) 7.5 cm

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

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Q:

The average of 10 numbers is X and one of the number is 38. If 38 is replaced with 19, then what will be the new average?

A) X– (1/2)   B) X – (1/19)  
C) X – (19/10)   D) X – (19/9)
 
Answer & Explanation Answer: C) X – (19/10)  

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

If 25% of an electricity bill is deducted, Rs 1788 is still to be paid. How much was the bill?

A) Rs 1430 B) Rs 2420
C) Rs 1466 D) Rs 2384
 
Answer & Explanation Answer: D) Rs 2384

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

If ab+ba = -1, then the value of a2b-b2a is

A) 1 B) -1
C) 0 D) 2
 
Answer & Explanation Answer: C) 0

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Filed Under: Simplification
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Q:

What is the value of tan 6° tan 36° tan 84° tan 54° tan 45°?

A) 1/2 B) 1/√2
C) 1 D) 1/3
 
Answer & Explanation Answer: C) 1

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Q:

What is the value of 143 + 163 + 183 + ... + 303?

A) 134576 B) 120212
C) 115624 D) 111672
 
Answer & Explanation Answer: D) 111672

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Filed Under: Simplification
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