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mahesh hold 12 cards of 4 suits of which 6 are red and 6 are black.there are twice as many diamond and twice as many hearts as diamond.how many clubs does he hold?

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if a series is given 1,2,2,3,3,3,4,4,4,4,1,1,2,2,2,2,3,3,3,3,3,3,..... then which no will be at 2320th position? In a group of 80 coins,exactly one is counterfeit and weighs less than others. You are provided to weigh the coins. The minimum number of weighing required to determine counterfeit coin is?