A jar contains 10 different types of candies. A child is allowed to pick 3 candies from the jar without repetition. How many different combinations of candies can the child pick?
Options
A
120
B
720
C
30
D
90
Answer & Analysis
Answer
A
Analysis
Question Analysis
This question focuses on applying the combination formula for non - repetitive selection.
The main task is to correctly identify the values of (total number of items) and (number of items to be chosen) and then use the formula to find the number of combinations.
Key Concept Explanation
The formula is used when we want to select items from distinct items without repetition, and the order of selection doesn't matter.
Here, (types of candies) and (number of candies to be picked).
Step - by - Step Solution
First, calculate the factorials:
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