Two letters are chosen randomly from the word PROBABILITY. Find the probability that the two letters chosen are the same.

Question

Two letters are chosen randomly from the word PROBABILITY. Find the probability that the two letters chosen are the same.
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Solution 1

The word PROBABILITY has 11 letters in total.

First, let's break down the frequency of each letter:

  • P: 1
  • R: 1
  • O: 1
  • B: 2
  • A: 1
  • I: 2
  • L: 1
  • T: 1
  • Y: 1

The only letters that appear more than once are B and I.

The probability of drawing two of the same letters depends on these two let Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study prob

Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solv

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