When the trial of simultaneously tossing 2 coins is repeated 10 times, let $X$ be the random variable representing the number of times both coins show heads. Find the variance $\mathrm { V } ( 4 X + 1 )$ of the random variable $4 X + 1$. [3 points]
When the trial of simultaneously tossing 2 coins is repeated 10 times, let $X$ be the random variable representing the number of times both coins show heads. Find the variance $\mathrm { V } ( 4 X + 1 )$ of the random variable $4 X + 1$. [3 points]