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[" Six identical coins are arranged in a row.The number of ways in which the number of "],[" tails is equal to the number of heads is "]

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Six identical coins are arranged in a row.The total number of ways in which the number of heads is equal to the number of tails is

Six identical coins are arranged in a row. The total number of ways in which the number of heads is equal to the number of tails is

Six identical coins are arranged in a row. The total number of ways in which the number of heads is equal to the number of tails is

Six identical coins are arranged in a row. The total number of ways in which the number of heads is equal to the number of tails is

Six identical coins are arranged in a row. The total number of ways in which the number of heads is equal to the number of tails is

Six identical coins are arranged in a row. The total number of ways in which the number of heads is equal to the number of tails is (a) 9 (b) 20 (c) 40 (d) 120

2nd idetical coins are arrangeed in a row and the number of ways in which the number of heads is equal to the nuber of tails is 70, then n= (A) 4 (B) 5 (C) 3 (D) none of these

2nd idetical coins are arrangeed in a row and the number of ways in which the number of heads is equal to the nuber of tails is 70, then n= (A) 4 (B) 5 (C) 3 (D) none of these