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Q:

∆DEF is right angled at E. If m∠F = 60 deg, then find the value of (cotD - 2/√3).

 

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

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Filed Under: Simplification
Exam Prep: Bank Exams

0 47106
Q:

A parallelogram has sides 30m and 14m and one of its diagonals is 40m long. Then its area is

A) 136 B) 236
C) 336 D) 436
 
Answer & Explanation Answer: C) 336

Explanation:

let ABCD be the given parallelogram 

area of parallelogram ABCD = 2 x (area of triangle ABC) 

now a = 30m, b = 14m and c = 40m

 s=1/2 x (30+14+40) = 42 

 

Area of triangle ABC = ss-as-bs-c  

 

= 4212282= 168sq m 

area of parallelogram ABCD = 2 x 168 = 336 sq m

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

103 47095
Q:

Choose the related word/letters/number from the given alternatives.

Horse : Neigh : : Elephant : ?

A) Quack B) Trumpet
C) Mew D) Grunt
 
Answer & Explanation Answer: B) Trumpet

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Filed Under: Analogy
Exam Prep: Bank Exams

0 47092
Q:

Which of the following statements are CORRECT?

 

I. Ethanol is a good solvent for organic compounds.

II. Boiling and melting points of ethanol are low with respect to water.

III. Ethanol is used tincture iodine

 

A) Only I and II B) Only I and III
C) Only II and III D) All I, II and III
 
Answer & Explanation Answer: D) All I, II and III

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Filed Under: Chemistry
Exam Prep: Bank Exams

1 47073
Q:

Metals can be given different shapes according to our needs because they posses the properties of

 

A) Conductivity and sonorosity B) Malleability and ductility
C) Malleability and sonorosity D) Ductility and conductivity
 
Answer & Explanation Answer: B) Malleability and ductility

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Filed Under: Physics
Exam Prep: Bank Exams

1 47050
Q:

The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?

A) 20% B) 30%
C) 40% D) 50%
 
Answer & Explanation Answer: D) 50%

Explanation:

Let original length = x and original breadth = y.

Original area = xy. 

New length = x/2 and New breadth=3y 

New area = 32xy 

Therefore,  Increase in area = New area-original area = 32xy-xy=12xy 

 

Therefore,  Increase % = increase in area original area*100=12xyxy*100=50 %

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

47 47030
Q:

Select the figure which does not belong to the group.

 

 

 

A) A B) B
C) C D) D
 
Answer & Explanation Answer: D) D

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 47022
Q:

The Sum of three consecutive numbers is 126.Find the highest number.

 

A) 41 B) 42
C) 43 D) 44
 
Answer & Explanation Answer: D) 44

Explanation:
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Filed Under: Inventions
Exam Prep: Bank Exams

218 46990