Discrete Math HW Help

I need an explanation for this Mathematics question to help me study.

1. The probability of winning a lottery by selecting the correct six integers from the positive integers not exceeding 50 is _____ × 10^–8 . (The order in which these integers are selected does not matter.)

(Note: Enter the value in decimal format and round it to one decimal place.)

2. The probability of winning a lottery by selecting the correct six integers from the positive integers not exceeding 52 is _____ × 10^–8 . (The order in which these integers are selected does not matter.)

(Note: Enter the value in decimal format and round it to one decimal place.)

3. The probability of winning a lottery by selecting the correct six integers from the positive integers not exceeding 56 is _____ × 10^–8 . (The order in which these integers are selected does not matter.)

(Note: Enter the value in decimal format and round it to one decimal place.)

4.The probability of winning a lottery by selecting the correct six integers from the positive integers not exceeding 60 is _____ × 10^–8 . (The order in which these integers are selected does not matter.)

(Note: Enter the value in decimal format and round it to one decimal place.)