I know if I had to find the mean variance and standard dev of the binomial distribution with given values of n=125 and p=0.43 that to find the mean I…

I know if I had to find the mean variance and standard dev of the binomial distribution with given values of n=125 and p=0.43 that to find the mean I mult 125*0.43 but what next? How do I find the variance and the standard dev?

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