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(A, B, C, D, E, F) are going to be seated in a line. How many lines can be formed if B and C must be in second chair and E must be in third?
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- husoskiLv 74 weeks ago
Did you mean "if B *or* C must be in second chair"? In that case, E and the 3rd seat are assigned. There are 2 ways to fill seat 2 (B or C) and 3!=6 ways to put the remaining 3 individuals in the remaining 3 seats.
2*6 = 12 ways
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