Math Problem Statement
Dilakukan percobaan lempar undi 3 keping uang logam, lalu didata hasil percobaan untuk yang muncul paling sedikit dua gambar. Jika nilai frekuensi harapan dari percobaan tersebut adalah 360, maka banyaknya percobaan yang dilakukan adalah....
A. 240
B. 420
C. 540
D. 640
E. 720
Solution
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Math Problem Analysis
Mathematical Concepts
Probability
Expected Frequency
Formulas
Total possibilities with 3 coins = 2^3 = 8
Probability of at least 2 heads (gambar): P = 4/8 = 1/2
Expected Frequency formula: E = P * n
Theorems
Basic Probability Theorem
Suitable Grade Level
Grades 10-12
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