Soal SMA · Soal cerita · Kesulitan 3/5

A bag contains 5 red, 3 blue, and 2 green marbles. If two marbles are drawn without replacement, what is the probability that both are red?

A.1/9
B.2/9
C.1/6
D.2/15

Kunci jawaban & pembahasan

Jawaban: 2/9

P(first red) = 5/10 = 1/2. P(second red | first red) = 4/9. Product = (1/2)*(4/9) = 2/9.

Mau penjelasan yang menyesuaikan level anak?

Xinau AI membahas soal langkah demi langkah, menyesuaikan gaya bahasa dengan usia anak, dan menyusun latihan berikutnya berdasarkan jawaban sebelumnya.

Coba gratis 30 hari

Soal serupa

Rina has 24 apples. She gives 8 apples to her friend. How many apples does Rina have left?
A bookstore sells 15 books on Monday and 22 books on Tuesday. What is the total number of books sold in the two days?
If a train travels at a constant speed of 60 km/h, how far will it travel in 3 hours?
A shirt costs $20. If there is a 25% discount, what is the sale price?
Tom can read 30 pages in 1 hour. How many pages can he read in 4 hours?
A recipe requires 2 cups of flour to make 12 cookies. How many cups of flour are needed to make 36 cookies?