Question
Among a set of 4 black balls and 3 white balls, how many selections of 3 balls can be made such that at least 2 of them are black balls?
More Permutation and combination Questions
- How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "TRIANGLE"?
- 6 students appear in an examination. In how many ways can the result be announced?
- How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "NATURES"?
- From a group of 8 girls and 7 boys, a committee of 9 is to be formed. In how many ways can the committee be formed if it must include at least 6 girls?
- In how many different ways can the letters of the word ‘CURIOES’ be arranged in such a way that the vowels occupy only the odd positions?
- Find the number of ways to arrange each letter of the word 'RECREATION' such that all the vowels always come together.
- A club has 6 men and 5 women. How many committees of 5 have at least 2 women?
- Among a set of 4 black balls and 3 white balls, how many selections of 3 balls can be made such that at least 2 of them are black balls?
- How many ways can 8 women and 8 men be seated around a circular table where no two women can sit together?
- Number of 4-digit numbers that can be formed using digits 1–9 without repetition and are divisible by 5.
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