Question Number 139737 by mathsuji last updated on 30/Apr/21
$${Find}\:{the}\:{value}\:{of}\:{X}\:{such}\:{that}: \\ $$$$\mathrm{1}\centerdot\mathrm{5}\centerdot\mathrm{9}\centerdot\mathrm{13}\centerdot\mathrm{17}\centerdot…\centerdot\mathrm{2021}\equiv{X}\left({mod}\mathrm{1000}\right) \\ $$
Answered by mindispower last updated on 01/May/21