A few of Discrete math skills are given below:

Discrete math skills in Algebra

• Binomial Theorem
• Pascal's Triangle
• principle of mathematical induction

Discrete math skills in Counting methods

• Combinations formula
• Difference between Combinations &. Permutations
• factorial of a number
• Permutations or arrangements
• Fundamental rule of Counting 
• Set theory
• Number of subsets formula

Discrete math skills in Probability

• Conditional Probability
• Dependent events examples
• Conditional Probability examples
• What are independent events?
• Introduction to Probability
• Probability of Dependent Events
• Probability of Independent Events
• Probability of Multiple Events
• Using the Complement to Calculate Probability

Discrete math skills in Numbers

• Divisibility rules of integers
• Prime factorisation method of expression
• Prime numbers
• Euclidean algorithm
• Various types of Sequences

Math lessons related to Discrete math

• Probability and Statistics
• Set theory
• Pre algebra