Find n if n-1 P 3 : n P 3 = 1 : 9.

Question

Philoid · Accepted Answer

<img w='61' height='39' src='https://static.insightsonindia.in/ncertusercontent/solutions/?domain=gF&l=PROJ14649/1522908662808149.png' style='vertical-align: center;'> <img w='119' height='83' src='https://static.insightsonindia.in/ncertusercontent/solutions/?domain=gF&l=PROJ14649/1522908663559315.png' style='vertical-align: center;'> <img w='116' height='43' src='https://static.insightsonindia.in/ncertusercontent/solutions/?domain=gF&l=PROJ14649/1522908664298951.png' style='vertical-align: center;'> <img w='64' height='42' src='https://static.insightsonindia.in/ncertusercontent/solutions/?domain=gF&l=PROJ14649/1522908665004618.png' style='vertical-align: center;'> ⇒ n=9.

Find n if n-1P3 : nP3 = 1 : 9.

Find n if ^n-1P₃ : ⁿP₃ = 1 : 9.