2555
No, they are not.
50/750=15/7515=1/15=0.0667
The ISBN of Twisted Souls is 0-7515-3523-0.
The ISBN of Holy Warrior is 978-0-7515-4209-7.
The ISBN of The Asti Spumante Code is 0-7515-3768-3.
The ISBN of The Leper of Saint Giles is 0-7515-1101-3.
The ISBN of A Morbid Taste for Bones is 0-7515-1101-3.
The phone number of the Mcbee Depot Library is: 843-335-7515.
The address of the Peachtree Branch Library is: 1315 Peachtree Street, N.E., Atlanta, 30309 7515
The phone number of the Webster County Public Library is: 662-258-7515.
The greatest common factor of 75 and 135 is 15.15 x 5 = 7515 x 9 = 135
You can check this site and read the user´s guide: http://tacpservice.toshiba.com/ConsumerProductSupport/Manuals/Telephone/FT7515.pdf