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JunhaoZ
Flipping a tail is 1/2 because there's only two options, drawing a king is 4/52, or 1/13, because there's 4 in 52 card deck. Drawing a heart is 1/4 because there's 4 suits.
1) There is 1/2 chance that you flip tails. You have 1/13 chance of drawing a king. 
[tex] \frac{1}{2} + \frac{1}{13} = \frac{15}{26} [/tex]

Answer: [tex] \frac{15}{26} [/tex] chance

2)There is 2/13 chance you draw a king or a heart.

Answer: [tex] \frac{2}{13} [/tex]

Hope this helps c: