If , find .
yashucool:
ans is in n or in numeric form
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nP₄=20×nP₃ Value of n=?
=>n(n-1)(n-2)(n-3)=20.n(n-1)(n-2) {n(n-1)(n-2) from both sides gets cancelled out}
=>(n-3)=20
=>n=17
therefore value of n is 17
mark it best if it helps u.
=>n(n-1)(n-2)(n-3)=20.n(n-1)(n-2) {n(n-1)(n-2) from both sides gets cancelled out}
=>(n-3)=20
=>n=17
therefore value of n is 17
mark it best if it helps u.
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