15
Q:

A group of students decided to collect as many paise from each member of group as is the number of members. If the total collection amounts to Rs. 59.29, the number of the member is the group is:

A) 57 B) 67
C) 77 D) 87

Answer:   C) 77



Explanation:

Money collected = (59.29 x 100) paise = 5929 paise.

 

  Number of members = 5929 = 77.

Q:

If (89)2 is added to the square of a number, the answer so obtained is 16202. What is the (1/26) of that number?

A) 5.65 B) 2.7
C) 3.5 D) 6.66
 
Answer & Explanation Answer: C) 3.5

Explanation:

Let the number is = x

(89)2 + x2 = 16202

x2 = 8281

x = 91

=> (1/26) of 91 = 3.5

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7 222
Q:

What should come in place of x in the following equation?

 x128 = 162x

A) 13 B) 12
C) 17 D) 16
 
Answer & Explanation Answer: B) 12

Explanation:

x128 = 162x

 

Then x2 = 162x128

  

   = Sqrt of 82 x 62 x 32

 

   = 8 x 6 x 3

 

   x2  = 144.

 

 x  = 12.

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5 254
Q:

Find the value of 1.21x0.91.1x0.11?

A) 0 B) 1
C) 3 D) 5
 
Answer & Explanation Answer: C) 3

Explanation:

Given   1.21x0.91.1x0.11

 

1.21x100x0.9x101.1x10x0.11x100

 

9

 

= 3.

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4 446
Q:

If x = 2 + 223 + 213 then find the value of x3-6x2+6x ?

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

Explanation:

Given that x = 2+ 223 + 213

 

So x - 2 = 223 + 213

 

Now cubing on both sides, we get

 

 

=> x3-8-6x2+12x = 4 + 2 + 6(x-2)

 

Therefore, x3-6x2+6x = -6 + 8 = 2

 

 

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5 390
Q:

If a = 5 + 15 - 1 b = 5 - 15 + 1 then find the value of a2+ab+b2a2-ab+b2 is ::

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

Explanation:

By simplifying, we get 4/3

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3 878
Q:

If x = 7-43 then find the value of x+1x?

A) 3sqrt{3} B) 8sqrt{3}
C) 14 D) 14+8sqrt{3}
 
Answer & Explanation Answer: C) 14

Explanation:
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29 1392
Q:

3 + 653-212-30+50 = ?

A) 3 B) 3sqrt{2}
C) 6 D) None of these
 
Answer & Explanation Answer: D) None of these

Explanation:
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13 1329
Q:

If 5+237+43 = a + b3 then a & b = ?

A) a=-11,b=-6 B) a=-11,b=6
C) a=11,b=-6 D) a=11,b=6
 
Answer & Explanation Answer: C) a=11,b=-6

Explanation:
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5 950