0 votes 0 votes The remainder when 7$^{84}$ is divided by 342 is 0 1 49 341 Quantitative Aptitude cat1999 quantitative-aptitude + – go_editor asked May 10, 2016 go_editor 13.8k points 454 views answer comment Share See all 0 reply Please log in or register to add a comment.
1 votes 1 votes $7^{84}=(7^{3})^{28}$ $\frac{ (7^{3})^{28} } {342}$ =$\frac{ (343 )^{28} } {342}$ Remainder of $\frac{ 343 } {342} =1$ As $7^{84}$ can be written as $(7^{3})^{28}$ The result will be $1^{28}$ =1 Hence Option (B)1 is the Answer. Leen Sharma answered May 10, 2016 Leen Sharma 11.5k points comment Share See all 0 reply Please log in or register to add a comment.