(viii) 4pq - 6p2 - 207, 9p2 – InterviewSolution

1.	(viii) 4pq - 6p2 - 207, 9p2
Answer» Answer: 9p2 is the number of PERMUTATIONS of the SELECTIONS of 2 items from 9 distinct items. That is, the number of ORDERED selections of 2 items pulled from 9. This is RELATED to the count of the combinations of 2 items selected from 9, by multiplying that by the count of the permutations of 2 items. 9P2=9C2×2!=9!2!(9−2)!×2!=9!7!=9×8=72

(viii) 4pq - 6p2 - 207, 9p2

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Answer:

9p2 is the number of PERMUTATIONS of the SELECTIONS of 2 items from 9 distinct items. That is, the number of ORDERED selections of 2 items pulled from 9.

This is RELATED to the count of the combinations of 2 items selected from 9, by multiplying that by the count of the permutations of 2 items.

9P2=9C2×2!=9!2!(9−2)!×2!=9!7!=9×8=72

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(viii) 4pq - 6p2 - 207, 9p2​

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(viii) 4pq - 6p2 - 207, 9p2