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NIELIT 2022 Feb Scientist C - Section D: 3

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Lakshman Bhaiya asked Jul 21, 2022
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NIELIT 2022 Feb Scientist C - Section D: 1
Two men $\text{X}$ and $\text{Y}$ start from a place walking at $5.5 \; \text{km/h}$ and $6 \; \text{km/h}$ respectively. What is the time they will take to be $69 \; \text{km}$ apart, if they walk in opposite directions? $6$ hours $8$ hours $11.5$ hours $6$ hours $45$ minutes
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Lakshman Bhaiya asked Jul 21, 2022
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NIELIT 2022 Feb Scientist C - Section D: 2
If $\frac{a}{a+b} = \frac{7}{17},$ then $\frac{2a-b}{a+b}$ is equal to : $\frac{4}{17}$ $\frac{-3}{17}$ $\frac{10}{17}$ $\frac{8}{17}$
If $\frac{a}{a+b} = \frac{7}{17},$ then $\frac{2a-b}{a+b}$ is equal to :$\frac{4}{17}$$\frac{-3}{17}$$\frac{10}{17}$$\frac{8}{17}$
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Lakshman Bhaiya asked Jul 21, 2022
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NIELIT 2022 Feb Scientist C - Section D: 4
For what value of $k,$ expression $x^{4} – 2x^{2} + k$ will be a perfect square ? $0$ $1$ $-1$ Cannot be determined.
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