Among 26 letters, there are 5 vowel letters and the remaining are consonant letters. if three letters are randomly picked out to form a code and the chosen letters cannot be repeated, how many codes, which consist of at least two vowel letters, are possible?

1320

Explanation:

The English alphabets have:

5 vowels and 21 consonants.

A three letter code has to be made ans repetition is not allowed and also it must consists atleast 2 vowel letters.

Let's make two cases for it:

2 vowels + 1 consonant

The possible codes = ⁵C₂ × ²¹C₁ × 3! = 10 × 21 × 6 = 1260

3 vowels

The possible codes = ⁵C₃ × 3! = 10 × 6 = 60

Total possible codes = 1320

d

explanation:

civil rights vs. civil liberties. civil liberties are basic freedoms while civil rights are the basic right to be free from discrimination based on such characteristics as race, disability, color, gender, national origin, and others. discriminating against an employee on the basis of gender is a civil rights violation.

all cities have a governor

all cities are in states or provnies then country

all cities have people

difference

some are rich

some are poor

some are average