GCSE Secondary Maths Age 13-17 - Probability & Statistics: Combinations - Explained

The video tutorial explains two math problems involving combinations. The first problem involves Marie distributing 25 unique cards to Shelley and Pauline, calculating the number of ways this can be done. The second problem involves David selecting students from his class in specific orders, calculating the number of possible lists. The tutorial covers the step-by-step process of solving these problems, including the multiplication of possibilities and the final calculations.

How many different ways can Marie distribute one card to Shelley and one to Pauline?

• 650

• 600

• 500

• 625

In the sequence Boy, Girl, Boy, how many choices does David have for the first boy?

• 12

• 13

• 11

• 10

After selecting the first boy in the sequence Boy, Girl, Boy, how many boys are left to choose from?

• 11

• 12

• 13

• 10

In the sequence Girl, Boy, Girl, how many choices does David have for the second girl?

• 9

• 11

• 8

• 10

What is the total number of different lists David can write?

• 2600

• 2500

• 2400

• 2300