math

[Dencology]

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jack has 16 jellybeans in his pocket. he has eight red, four green, and four blue. what is the minimum number of jellybeans she must take out of his pocket to ensure that she has one of each color?

4, 8,12,13,16.
ans. 13. how?

 

[btk2333]

math
jack has 16 jellybeans in his pocket. he has eight red, four green, and four blue. what is the minimum number of jellybeans she must take out of his pocket to ensure that she has one of each color?

4, 8,12,13,16.
ans. 13. how?

he has to pick eight to ensure that he gets more than just reds (after 8 consecutive red draws there would be no reds left) then he would have to draw four more times (four consecutive green/blue would leave the bag with 0 green/blue left) and then one more time to get the third color.

You have to think of it as a "worst case scenario"
basically Jack would draw 8 reds, 4 greens, then 1 blue in this case whcih gives you 13 total draws

 

[Mista E]

yup-def have to look at it as worst case

if this helps... just look at the lowest number of a single color-thats 4-if you'd pick 12 out of 16 jelly beans, you could theoretically still have 4 of that same color left over. So to make sure, just pick one more and you'll get your third color.