A group of n boys can be arranged in a line in a certain number of ways. By adding two more boys to the
group, the number of possible arrangements increases by a factor of 420. Find the value of n.
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A group of n boys can be arranged in a line in a certain number of ways. By adding two more boys to the
group, the number of possible arrangements increases by a factor of 420. Find the value of n.
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A group of n boys can be arranged in a line in a certain number of ways. By adding two more boys to the
group, the number of possible arrangements increases by a factor of 420. Find the value of n.
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