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There are 49 vacant seats among 50 seats. If no two girls sit together then the total number of seats will be=49-12=37 Hence, the total way of seating 12 girls on 37 seats is =37P12 =37!/25!
632, 625, 611, 590, 562, ?
36, 72, 47, 63, ?, 58
120, 130, 145, 165, ?, 220
64, 32, 48, 120, 420, ?
24, 42, 60, ?, 96, 114
1290, 1225, 1175, ?, 1112, 1095, 1085
64, 80, 120, 210, ?, 945
Choose the missing term?
B, D, F, I, L, P, ?
9 28 83 250 ? 2248
4, 6, 12, 30, ?, 315, 1260
