The probability distribution of a discrate random variable X is :
`{:(X=x, 1,2,3,4,5),(P(X=x),k,2k,3k,4k,5k):}`
Find `P (X le 4).`

Explanation

To find \( P(X \leq 4) \) for the given probability distribution of the discrete random variable \( X \), we can follow these steps:

### Step 1: Write down the probability distribution.
The probability distribution is given as:
- \( P(X = 1) = k \)
- \( P(X = 2) = 2k \)
- \( P(X = 3) = 3k \)
- \( P(X = 4) = 4k \)
...