There are letter tiles in a bag. Four A's, five B's, six C's and five D's. You select one tile, replace it, and then draw anothe
r. P( C and D)=____
1 answer:
Answer: 3/40
Step-by-step explanation:
Number of A's = 4
Number of B's = 5
Number of C's = 6
Number of D's = 5
Total number of letters tiles = 20
Probability of selecting C = 6/20 = 3/10
Probability of selecting D = 5/20 = 1/4
P( C and D)= 3/10 × 1/4 = 3/40
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