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Sagot :
Answer:
For the first place, Rachel can put any of the 9 blocks, so we have 9 options. For the second place, there will be 8 blocks left, so 8 options in this case. For the third place there will be 7 options and so on. The number of different arrangements is
N = 9 \times 8 \times 7 \times 6 \times5 \times4 \times 3 \times 2 \times 1 = 362\,880N=9×8×7×6×5×4×3×2×1=362880
Step-by-step explanation:
Answer:
9! = 362 880
Step-by-step explanation:
9! means 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1
You multiply all numbers from 9 to 1
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