Question

what are the two last digit of 3^83 ​

Answer 1

Step-by-step explanation:

Method #1:#1:

Now,

345=3⋅344=3(32)22=3(10−1)22=3(1−10)22

345=3⋅344=3(32)22=3(10−1)22=3(1−10)22

Now,

(1−10)22≡1−10⋅22(mod100)≡−19≡81

(1−10)22≡1−10⋅22(mod100)≡−19≡81

Method #2:#2:

As (3,10)=1

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