The minimum number of times a fair coin needs to be tossed, so that the probability of getting at least two heads is at least `0.96,` is ______.

Explanation

To solve the problem of finding the minimum number of times a fair coin needs to be tossed so that the probability of getting at least two heads is at least 0.96, we can follow these steps:

### Step 1: Understand the Probability of Getting At Least Two Heads
The probability of getting at least two heads can be expressed as:
\[ P(\text{at least 2 heads}) = 1 - P(0 \text{ heads}) - P(1 \text{ head}) \]

### Step 2: Calculate the Probability of Getting 0 Heads
The probability of getting 0 heads when a coin is tossed \( n \) times is given by:
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