The probability of rolling an odd number with a six-sided number cube is 1/2 Choose the likelihood that best describes the probability of this event. O A. Unlikely
O B. Likely
O C. Certain
O D. Neither likely nor unlikely​

oof

step-by-step explanation:

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

source: