5
Q:

# The value of $80-11245-63$ is:

 A) 3/4 B) 4/3 C) 4/7 D) 7/4

Answer:   B) 4/3

Explanation:

$80-11245-63=16×5-16×79×5-9×7=45-4735-37$

$=45-735-7=43$

Q:

Cube root of 729 then square it

 A) 9 B) 36 C) 81 D) 144

Answer & Explanation Answer: C) 81

Explanation:

729 = 9 x 9 x 9

=> Cube root of 729 = 9

Now, required square of 9 = 9 x 9 = 81.

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0 230
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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11 1050
Q:

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

 A) 13 B) 12 C) 17 D) 16

Answer & Explanation Answer: B) 12

Explanation:

Then x2 = $162x128$

= Sqrt of 82 x 62 x 32

= 8 x 6 x 3

x2  = 144.

x  = 12.

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5 616
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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6 933
Q:

If  then find the value of $x3-6x2+6x$ ?

 A) 1 B) 2 C) 3 D) 4

Answer & Explanation Answer: B) 2

Explanation:

Given that

So x - 2 =

Now cubing on both sides, we get

=>

Therefore,

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5 772
Q:

If

 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 1172
Q:

If x =

 A) 3sqrt{3} B) 8sqrt{3} C) 14 D) 14+8sqrt{3}

Answer & Explanation Answer: C) 14

Explanation:
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35 1903
Q:

 A) 3 B) 3sqrt{2} C) 6 D) None of these

Answer & Explanation Answer: D) None of these

Explanation:
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14 1874