GRE Sample Test 2 Quantitative Reasoning 2

Question : 12 of 20

Marks: +1, -0

At Flo’s Pancake House, pancakes can be ordered with any of six possible toppings. If no toppings are repeated, how many different ways are there to order pancakes with three toppings?

Validate

Solution:

Order doesn’t matter, so remember you must divide by the factorial of the number of decisions made. For the first topping, you have 6 options. For the second topping, you have 5 options. For the third topping, you have 4 options.

{6×5×4}/{3×2×1}

= 20, (A).

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