Mathematics, 31.05.2021 21:20, edith47

Sofia has a bag containing 8 blue beads and 7 red beads only. She takes one bead out of the bag at random and replaces it She does this 90 times. Find the number of time she expects to take a red bead Please help now!!!

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Sofia has a bag containing 8 blue beads and 7 red beads only. She takes one bead out of the bag at r...