Answer:
https://stars.library.ucf.edu/cgi/viewcontent.cgi?article=4740&context=etd
Explanation:
B
2,520
The word ALGEBRA has 7 letters with the letter A repeated twice.
Hence we permute all 7 letters with A repeated twice
₇P₇ / 2! = 7!/ [ (2!) ( 7-7)!]
= 2,520
