MCQ
એક રીંગમાં $5$ ચાવીઓ કેટલી રીતે ભરાવી શકાય ?
- A$\frac{1}{2}\,4!$
- B$\frac{1}{2}\,5!$
- C$4!$
- D$5!$
And here anti-clockwise or clockwise does not matter
$\therefore \text { No. of ways }=\frac{4 !}{2}$
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