Zusammenfassung der Ressource
PERMUTATION
- nPr=n!/(n-r)!
- 1.SIMPLE
- GOD=3!=6 CHAIR=5!=120
VISUAL=6!=720
- APPLE=5!/2!=120/2=60
PROMOTION=9!/3!=60480
ATTEMPT=7!/3!=840
- PREPARED=8!/(2!*2!*2!)=5040
ENGINEERING=11!/(3!*3!*2!*2!)=2,77,200
- 2.VOWELS
TOGETHER
- DAUGHTER=DGHTR(AUE)=6!*3!=4320
DIRECTOR=DRCTR(IEO)=(6!*3!)/2!=2160
- 3.VOWELS NEVER
TOGETHER
- EXTRA=XTR(EA)=5!-4!*2!=120-48=72
APPLE=PPL(AE)=5!/2!-(4!*2!)/2!=60-24=36
- 4.CIRCULAR PERMUTATION
- (N-1)!
- 5.OTHERS
- HOW MANY 3 DIGIT NUMBER WE CAN
FORM USING THE DIGITS 2,3,4,5,6?
- nPr=n!/(n-r)! =5P3=5!/2!=60