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Question Detail
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.
1. What fraction of \begin{aligned} \frac{4}{7}\end{aligned} should be added to itself to become \begin{aligned} 1\frac{1}{14} \end{aligned}
- \begin{aligned} \frac{7}{8} \end{aligned}
- \begin{aligned} \frac{7}{9} \end{aligned}
- \begin{aligned} \frac{7}{10} \end{aligned}
- \begin{aligned} \frac{7}{11} \end{aligned}
Answer: Option A
Explanation:
\begin{aligned}
=> \frac{4}{7}x + \frac{4}{7} = \frac{15}{4}
\end{aligned}
\begin{aligned}
= \frac{4}{7}x = \frac{15}{4} - \frac{4}{7}
\end{aligned}
\begin{aligned}
= \frac{4}{7}x = \frac{7}{14}
\end{aligned}
\begin{aligned}
= x = \frac{1}{2}\times \frac{7}{4} = \frac{7}{8}
\end{aligned}
2. 3034 - (1002 / 20.04) = ?
- 2984
- 2983
- 2982
- 2981
Answer: Option A
3. How many pieces of 0.85 meteres can be cut from a rod 42.5 meteres long
- 30
- 40
- 50
- 60
Answer: Option C
Explanation:
We need so simple divide 42.5/0.85,
=(4250/85) = 50
4. Simplify
(31/10) * (3/10) + (7/5) / 20
- 0
- 1
- 10
- 100
Answer: Option B
Explanation:
= (31/10) * (3/10) + (7/5) / 20
= (3.1) * (.3) + (1.4) / 20
= 0.93 + 0.07
= 1
5. Find the value of X
X = (6/119) * (63/8) * (17/9)
- 1/4
- 2/4
- 3/4
- 4
Answer: Option C
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