We know that Donald Trump is the oldest president of America. He is now 73 years old. With age, the function of the human brain decreases. This is called cerebral atropy.
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When a person reaches the age of 75, his brain function decreases by 15% compared to what when he was 25 years old.
Source: Wikipedia
This is the formula for calculating IQ.
Mental Age / Chronological age multiplied by 100 = IQAs Donald Trump's chronological age increases, so does his mental age decreasing accordingly.
Now we will calculate Trump's IQ...
Chronological age= 73
Mental Age= 19
IQ=(19/73)multiplied by 100
=26%
And that's my vote.
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FNkGZZE9.jpg&t=663&c=rpMT6Rs0So6vWg)