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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.

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A mobile plan costs Rs. 32 for 6 minutes. What is the approximate cost, in rupees, for 4 minutes?

A) 21.30 B) 21.40
C) 21.20 D) 21.50
 
Answer & Explanation Answer: A) 21.30

Explanation:
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3 men dig a hole in 10 days. How many days would it take for 5 men to dg the same hole?

A) 50/3 B) 7
C) 5 D) 6
 
Answer & Explanation Answer: D) 6

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Q:

Read the following information and answer the questions given below:

A has 28 elements, B has 32 elements and A U B has 40 elements.

How many elements are present only in B?

A) 28 B) 18
C) 12 D) 10
 
Answer & Explanation Answer: C) 12

Explanation:
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Q:

Read the following information and answer the questions given below:

A has 28 elements, B has 32 elements and A U B has 40 elements.

How many elements does A B have?

A) 12 B) 8
C) 10 D) 20
 
Answer & Explanation Answer: D) 20

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Q:

DEF is right angled at E. If tanD = 4/3, then what is the value of tanF ?

A) 3/4 B) 5/3
C) 4/5 D) 4/3
 
Answer & Explanation Answer: A) 3/4

Explanation:
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Q:

DEF is right angled at E. If m∠F = 45°, then find the value of (cosecD - 1/√3).

A) (√6-1)/√3 B) (1-√6)/√2
C) √3-2 D) (2-√3)/2√3
 
Answer & Explanation Answer: A) (√6-1)/√3

Explanation:
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Q:

The area of a circle is 38.5 cm2. Find its circumference (in cm).

A) 1848 B) 1716
C) 1621 D) 1587
 
Answer & Explanation Answer: A) 1848

Explanation:
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The length and breadth of a rectangle are 15 cm and 8 cm respectively. Find its area (in cm2)

A) 240 B) 208
C) 416 D) 120
 
Answer & Explanation Answer: D) 120

Explanation:
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