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120 lessons,
20h 16m
Number System (Remainder Practice Problem - 4) (in Hindi)
1,116 plays

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.

Unacademy user
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?
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)