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In how many ways 6 similar perk and 5 similar kitkat choclates be given away..

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In how many ways 11 different beads be strung into a necklace.? three man walk around a cirlce of 1750 metres circumference at the rate of 160 m,120 m,105 m per minute respectively..if thet all start together and walk in same direction when they will be together again for the first time??