19
Q:

Simplify the following :

373+353+283-3x37x35x28372+352+282-37x35-35x28-37x28 ?

A) 100 B) 1
C) 4 D) 0

Answer:   A) 100



Explanation:

Given 373+353+283-3x37x35x28372+352+282-37x35-35x28-37x28

 

It is in the form of

 a3+b3+c3-3abca2+b2+c2-ab-bc-ca= a + b + c

 

Here a = 37, b = 35 & c = 28 

 

=> a + b + c = 37 + 35 + 28 = 100

 

 

 

Therefore,   = 100

Subject: Simplification
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Q:

(a - b)2 + 2ab = ?

 

A) a2 - b2 B) a2 + b2
C) a2 - 4ab + b2 D) a2 -  2ab + b2
 
Answer & Explanation Answer: B) a2 + b2

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0 2656
Q:

1960.196=19.6xthen what will be the value of x?

 

A) 1.96 B)  10.96
C)  0.0196 D) 0.196
 
Answer & Explanation Answer: C)  0.0196

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0 3863
Q:

If cosθ = 4/5, then (secθ + cosecθ) =

 

A) 7/5 B) 15/12
C) 35/12 D) 12/5
 
Answer & Explanation Answer: C) 35/12

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1 3351
Q:

10 dozen apples, 15 dozen mangoes & 20 dozen oranges are kept for sale. 1/2, 1/3rd & 1/4th of each item respectively have been added. What is the total number of fruits kept for sale now?

A) 720 B) 600
C) 580 D) 820
 
Answer & Explanation Answer: A) 720

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0 180
Q:

125 - 73 + 48 - 137 + 99 = ?

A) 237 B) 62
C) -37 D) 52
 
Answer & Explanation Answer: B) 62

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1 203
Q:

If the value of θ = 30°, then the value of tan2θ + cot2θ.

 

A) 1/3 B) 4/3
C) 9/3 D) 10/3
 
Answer & Explanation Answer: D) 10/3

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1 4418
Q:

If the equations 6x - 5y + 11 = 0 and 15x +  ky - 9 = 0 have no solution, then the value of k is:

 

A) -18 B) 12.5
C) -12.5 D) 18
 
Answer & Explanation Answer: C) -12.5

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1 361
Q:

If Sin4A - Cos4A = 1 then (A/2) in degrees is 0° < A  90°

 

A) 60 B) 45
C) 40 D) 30
 
Answer & Explanation Answer: B) 45

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1 292