Card 1 of 22
A meal has 4 starter choices and 3 main-course choices. How many meals are possible?
A
Setting n=1n=1n=1 gives 1!=1×0!1!=1\times0!1!=1×0!, so 0!=10!=10!=1.
B
10×9×8=72010\times9\times8=72010×9×8=720.
C
No - the selected pair is unchanged.
D
4×3=124\times3=124×3=12 meals.
Card 1 of 22
1.6.2 Factorial and combinations notation Flashcards
22 flashcards on OCR (MEI) A Level Maths 1.6.2 Factorial and combinations notation: the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03.