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Q:

Which of the following method declarations are allowed inside interface?

A) public void m1()	B) private void m1()
C) protected void m1()	D) abstract public void m1()

Answer & Explanation Answer: D) abstract public void m1()

Explanation:

Inside an interface every method will be by default abstract and public

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Filed Under: Java
Job Role: IT Trainer

Q:

Which of the following are valied?

A) A class can extend any number of classes simulteneously	B) A class can implement only one interface at a time
C) A class can extend other class or can implement interface but not both simulteneously	D) None of the above

Answer & Explanation Answer: D) None of the above

Explanation:

A is wrong because a class can extend nly one class .B is wrong because a class can implement any number of interfaces.C is wronb because both can can be done simulteneously.So, D is correct

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Filed Under: Java
Job Role: IT Trainer

Q:

The banker's gain on a sum due 3 years hence at 12% per annum is Rs. 270. The banker's

discount is:

A) 1315	B) 1150
C) 1020	D) 980

Answer & Explanation Answer: C) 1020

Explanation:

T.D. =(B.G*100)/(R*T)=Rs(270*100)/(12*3) = Rs. 750.

B.D. = Rs.(750 + 270) = Rs. 1020.

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Filed Under: Banker's Discount

Q:

The banker's discount on a certain sum due 2 years hence is11/10of the true discount.

The rate percent is:

A) 10%	B) 7%
C) 8%	D) 5%

Answer & Explanation Answer: D) 5%

Explanation:

Let T.D. be Re. 1.

Then, B.D. = Rs.11/10= Rs. 1.10.

Sum = Rs. (1.10*1)/(1.10-1) = Rs. (110/10)= Rs. 11.

S.I. on Rs. 11 for 2 years is Rs. 1.10

Rate = [(100 x 1.10)/(11 x 2 )]% = 5%.

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Filed Under: Banker's Discount

Q:

The true discount on a bill of Rs. 540 is Rs. 90. The banker's discount is:

A) 108	B) 115
C) 100	D) 120

Answer & Explanation Answer: A) 108

Explanation:

P.W. = Rs. (540 - 90) = Rs. 450.

S.I. on Rs. 450 = Rs. 90.

S.I. on Rs. 540 = Rs.( 90 /450)x 540 = Rs. 108.

B.D. = Rs. 108.

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Filed Under: Banker's Discount

Q:

The present worth of a sum due sometime hence is Rs. 576 and the banker's gain is Rs.

16. The true discount is:

A) 78	B) 96
C) 105	D) 85

Answer & Explanation Answer: B) 96

Explanation:

T.D. = P.W. x B.G. = 576 x 16 = 96.

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Filed Under: Banker's Discount

Q:

The banker's gain on a bill due 1 year hence at 12% per annum is Rs. 6. The true discount

is:

A) 62	B) 58
C) 47	D) 50

Answer & Explanation Answer: D) 50

Explanation:

T.D. =(B.G. x 100)/ (R x T)= Rs. (6 x 100)/( 12 x 1) = Rs. 50.

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Filed Under: Banker's Discount

Q:

The certain worth of a certain sum due sometime hence is Rs. 1600 and the true discount is

Rs. 160. The banker's gain is:

A) 15	B) 16
C) 14	D) 13

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