Arabella's password consists of 1 letter followed by two digits. What is the probability of correctly guessing Arabella's password?
Sorry i don't have enough time to explain everything but the answer is
1/2,600 = 0.00038461538 ≈ .0004 (remember I put ≈ not =) (≈ means about)
= 00.04%
never mind, I'll explain it anyways even tho it's like 12:46 a.m. March 30th
you use 1/26 because it's 1/26 letters of the alphabet.
you use 1/10 twice because you choose 1 digit out of 10 digits twice.
so the chance will be 1/26 x 1/10 x 1/10 and that = 1/2,600
1/2,600 = 0.00038461538 ≈ .0004 = 00.04%
So your final answer would be "the probability of guessing her password correct is 0.04%
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If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
1/26 * 1/10 * 1/10 = ?