Question

3+k,18-k, 5k+1 என்பவை ஒரு கூட்டு தொடர் வரிசையில் உள்ளன எனில் k மதிப்பை காண்க ?

Answer 1

விளக்கம்:

கொடுக்கப்பட்டுள்ள கூட்டு தொடர் வரிசை

$3+k, 18-k, 5 k+1$

$\begin{aligned}& t_{2}-t_{1}=t_{3}-t_{2}\\&18-\mathrm{k}-(3+\mathrm{k})=5 \mathrm{k}+1-(18-\mathrm{k})\\&18-k-3-k=5 k+1-18+k\\&-2 k+15=6 k-17\\&-2 k-6 k=-17-15\end{aligned}$

$\begin{aligned}&-8 k=-32\\&8 k=32\end{aligned}$

$\begin{aligned}&k=\frac{32}{8}=4\\&\therefore k=4\end{aligned}$

Answer 2

Answer:

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