Question Number 104410 by Anindita last updated on 21/Jul/20
$$\boldsymbol{\mathrm{If}}\:\mathrm{11}×\mathrm{11}=\mathrm{121}, \\ $$$$\mathrm{111}×\mathrm{111}=\mathrm{12321},\mathrm{1111}×\mathrm{1111}=\mathrm{1234321} \\ $$$$\boldsymbol{\mathrm{then}}\:\boldsymbol{\mathrm{what}}\:\boldsymbol{\mathrm{is}}\:\boldsymbol{\mathrm{the}}\:\boldsymbol{\mathrm{answer}}\:\boldsymbol{\mathrm{of}} \\ $$$$\mathrm{111111}×\mathrm{111111}\:? \\ $$$$\left(\boldsymbol{\mathrm{It}}\:\boldsymbol{\mathrm{is}}\:\boldsymbol{\mathrm{a}}\:\boldsymbol{\mathrm{short}}\:\boldsymbol{\mathrm{question}}\right) \\ $$
Answered by OlafThorendsen last updated on 21/Jul/20
$$\mathrm{12345654321} \\ $$