0
Q:

What is the compound interest earned at the end of 3 years?

I. Simple interest earned on that amount at the same rate and for the same period is Rs. 4500.

II.The rate of interest is 10 p.c.p.a.

III.Compound interest for 3 years is more than the simple interest for that period by Rs.465.

A) I and II only B) II and III only
C) I and III only D) Either II or III only

Answer:   D) Either II or III only



Explanation:

 

 

 

 

 

 

I. gives, S.I for 3 years = Rs. 4500.

 

 

 

II. gives, Rate = 10% p.a.

 

 

 

III. gives, (C.I.) - (S.I.) = Rs. 465.

 

 

 

Clearly, using I and III we get C.I. = Rs. (465 + 4500).

 

 

 

Thus, II is redundant.

 

 

 

Also, from I and II, we get sum =

 

 

 

100 x 4500

 

 

 

= 15000.

 

 

 

10 x 3

 

 

 

Now C.I. on Rs. 15000 at 10% p.a. for 3 years may be obtained.

 

 

 

Thus, III is redundant.

 

 

 

Either II or III is redundant.

Q:

What will be the equation of the perpendicular bisector of segment joining the points (5,­3) and (0,2)?

A) x + y = 2 B) x -­ y = ­-3
C) x + y = ­2 D) x ­- y = 3
 
Answer & Explanation Answer: D) x ­- y = 3

Explanation:
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0 600
Q:

What is the distance between the points (4,7) and (­1,­5)?

A) 10 units B) 13 units
C) 5 units D) 11 units
 
Answer & Explanation Answer: B) 13 units

Explanation:
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0 612
Q:

Chords PQ and RS of a circle extended externally intersect at point T. Length of the segment PT, if lengths of QT, RT and ST are 9 cm, 18 cm and 6 cm respectively, is

A) 18 cm B) 12 cm
C) 16 cm D) 8 cm
 
Answer & Explanation Answer: B) 12 cm

Explanation:
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0 1053
Q:

What is the measure of an interior angle of a regular Octagon?

A) 135° B) 120°
C) 140° D) 144°
 
Answer & Explanation Answer: A) 135°

Explanation:
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0 831
Q:

If cos(A-B) - cos(A+B) = x, then the value of x is

A) 2sinAsinB B) 2cosAcosB
C) 2cosAsinB D) 2sinAcosB
 
Answer & Explanation Answer: A) 2sinAsinB

Explanation:
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0 543
Q:

The slope of the line passing through the points (-5,1) and (x,-4) is -5/8. Find x.

A) 4 B) 3
C) 2 D) -1
 
Answer & Explanation Answer: B) 3

Explanation:
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0 600
Q:

If 4x - 5y = -37 and 7x + y = -16, then x - y = ______

A) -8 B) 8
C) 2 D) -2
 
Answer & Explanation Answer: A) -8

Explanation:
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0 659
Q:

What is the reflection of the point (3, 2) in the line y = -2?

A) (-7 , 2) B) (-3 , -6)
C) (-7 , -2) D) (3 , -6)
 
Answer & Explanation Answer: D) (3 , -6)

Explanation:
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