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Number System practice problem - 11 (in Hindi)
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Number System practice problem - 11 (in Hindi)

Bharat Gupta is teaching live on Unacademy Plus

Bharat Gupta
Engineer by degree Mathematician by Heart. Having 22 years of teaching experience. More than 20000 students selected.

Comments
(6)
U
Unacademy user
K
When will we get the assignment in Assamese language?
Sir you approach for the last question of the video is not at all correct. The concept applied is wrong. m saying this because 3^(4n+1) gives the unit digit to be 3,3^(4n+2) gives the unit digit to be 9 etc etc... for example 3^5 (5 can be written as 4n+1) gives 243 so the unit digit is 3 and so on...
Rohan kumar
6 months ago
can u help me with the solution?
Sir why dint you consider 9 while considering 5 .
SM
Sir, we did not understand how possible values of a came to 0, 1, 5, 6.
KS
sir why can A not be equal to 3, 7, 9?
sir great awesome last question was awesome
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