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Number System (Remainder Practice Problem - 4) (in Hindi)
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Number System (Remainder Practice Problem - 4) (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.

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(3)
U
Unacademy user
Ns
Namaste mam I am Nitin Singh from Dehradun I preparing CDS EXAM.
Harpreet Kaur
3 years ago
Good luck for your exam dear
Sir, according to Euler's theorem we divide the power by phi(n) if a and n are co-prime. So when we have to find the unit digit of any number why do we simply divide the power by 4 which is phi(10) even when its not co prime with 10? Like in question 2 here?
K
last ques kisi aur method se bataiye
Sir when powers are same we cant we just add the base and solve the question.(ques 3)