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The number of girls in a class are 7 times the number of boys, which value can never be the of total students

  • 40
  • 48
  • 24
  • 30

Answer: Option D

Explanation:

Let the boys are X, then girls are 7X, total = X+7X = 8X

So it should be multiple of 8, 30 is not a multiple of 8.

Similar Questions :

1. Find the value of X
X = (6/119) * (63/8) * (17/9)

  • 1/4
  • 2/4
  • 3/4
  • 4

Answer: Option C

2. 100 + 50 * 2 = ?

  • 200
  • 150
  • 100
  • 300

Answer: Option A

Explanation:

After applying BOMAS rule,
First Multiplication will be done then addition
So it will be 100 + 100 = 200

3. Company workers decided to raise Rs. 3 lakhs by equal contribution from each. Had they contributed Rs. 50 each extra, the contribution would have been Rs. 3.25 lakhs. How many workers were they?

  • 300
  • 400
  • 500
  • 600

Answer: Option C

Explanation:

N * 50 = (325000 - 300000) = 25000
N = 25000 / 50
= 500

4. 3034 - (1002 / 20.04) = ?

  • 2984
  • 2983
  • 2982
  • 2981

Answer: Option A

5. \begin{aligned}
(3\frac{1}{4}\div \{1\frac{1}{4} - \frac{1}{2}(2\frac{1}{2} - \overline {\frac{1}{4} - \frac{1}{6}} ) \} )
\end{aligned}

  • 78
  • 88
  • 98
  • 108

Answer: Option A

Explanation:

Tip:
As you can see, there is bar over
\begin{aligned}
\overline{\frac{1}{4}-\frac{1}{6}}
\end{aligned}
So their sign will be changed from - to + as
\begin{aligned}
\frac{1}{4}+\frac{1}{6}
\end{aligned}

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