Does the alphabet have 26 letters?

Answer 1

Absolutely not. Each one has a different amount of letters. English uses the Latin alphabet. Hawaiian has a 12 letter alphabet and so on. Some languages such as Russian, Hebrew, Arabic use alphabets with different characters from the Latin alphabet.

Answer 2

the ENGLISH one does.. other languages differ
It depends on which alphabet you are talking about:

the Latin alphabet for English has 26 letters.

the Hebrew alphabet has 22 letters.

The Arabic alphabet has 28 letters.

Answer 3

“The quick brown fox jumps over the lazy dog,” is a well-known pangram, or holoalphabetic sentence,
using all 26 letters once.