A. Write P before the number if the situation involves permutation and C if it involves combination. 1. Selecting 2 songs from 10 choices for an audition piece 2. Fixing the schedule of a group of students who must take exactly 8 subjects _3. Enumerating the subsets of a set _4. Arranging the pots in a row _5. Choosing books from a shelf _6. Cracking the code of a lock _7. Assigning house numbers to residents _8. Assigning mobile numbers to subscribers
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
I need answers for numbers 2, 3, and 5.
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