D. 20.
To find the answer, we need to use combinations (since order does not matter for the two-topping sandwiches). The formula for combinations is:
nCr = n! / r!(n-r)!
where n is the total number of items (in this case, toppings) and r is the number of items we need to choose (in this case, 2 toppings).
Plugging in our numbers, we get:
6C2 = 6! / 2!(6-2)! = 15
So there are 15 different combinations of two toppings.
A sandwich shop offers the following toppings. How many two-topping sandwiches can you make?
lettuce
tomato
bacon
cheese
mustard
A. 8
B. 10
C. 12
D. 20.
1 answer
3 answers