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Model Paper 6 — MATHS STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceMATHSModel Paper 62 Marks
Question
Write E = (14, 21, 28, 35, 42, ..., 98) in set-builder form.
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Answer

Now,
$\begin{array}{l}14=7 \times 2 \\ 21=7 \times 3 \\ 28=7 \times 4 \\ 35=7 \times 5 \\ 42=7 \times 6 \\ 98=7 \times 14\end{array}$
Therefore,the given set can be write as 
$E=\{x: x=7 n, n \in N$ and $1 \leq n \leq 14\}$

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