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Question Detail
If 144/0.144 = 14.4/x, then x = ?
- 0.144
- 0.0144
- .00144
- 1.44
Answer: Option B
1. Which is in descending order
- 11/17, 7/11, 8/15, 5/9
- 11/17, 5/9, 7/11, 8/15
- 5/9, 8/15, 11/17, 7/11
- 11/17, 7/11, 5/9, 8/15
Answer: Option D
2. Evaluate
\begin{aligned} \frac{10.3 \times 10.3 \times 10.3 + 1}{10.3 \times 10.3 - 10.3 + 1}
\end{aligned}
- 113
- 1.13
- 11.3
- 113
Answer: Option C
Explanation:
\begin{aligned}
a^3 + b^3 = (a+b)(a^2 + b^2 - ab)
\end{aligned}
\begin{aligned}
= \frac{10.3^3 + 1^3}
{10.3^2 + 1^2 - 10.3 \times 1}
\end{aligned}
\begin{aligned}
= (a+b) = (10.3+1) = 11.3
\end{aligned}
3. \begin{aligned}
\frac{5 \times 1.6 - 2 \times 1.4}{1.3} = ?
\end{aligned}
- 1
- 2
- 3
- 4
- 5
Answer: Option D
Explanation:
As per given equation we can solve like this :
\begin{aligned}
= \frac{8 - 2.8}{1.3} \\
= \frac{5.2}{1.3} = \frac{52}{13} \\
= 4
\end{aligned}
4. 792.02 + 101.32 - 206.76
- 676.58
- 687.58
- 686.58
- 586.58
Answer: Option C
5. Correct expression of \begin{aligned}
6.\overline{46}
\end{aligned} is
- \begin{aligned} \frac{640}{99} \end{aligned}
- \begin{aligned} \frac{640}{90} \end{aligned}
- \begin{aligned} \frac{64000}{99} \end{aligned}
- \begin{aligned} \frac{640}{9} \end{aligned}
Answer: Option A
Explanation:
\begin{aligned}
6.\overline{46} = 6 + 0.\overline{46}
= 6 + \frac{46}{99}
= 6\frac{46}{99} = \frac{640}{99}
\end{aligned}
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