Question

Determinati ultima cifra a numarului:
1) 2 la puterea 2011
2) 7 la puterea 2011
3) 3 la puterea 2011 + 4 la puterea 2011

REPEDE!!

Answer 1

1. u.c[2²⁰¹¹]=u.c[2¹¹]=u.c=8;
2. u.c[7²⁰¹¹]=u.c[7¹¹]=u.c=3;
3. u.c[3²⁰¹¹]=u.c[3¹¹]=u.c=7;
u.c[4²⁰¹¹]=u.c[4¹¹]=u.c=4;
⇒4+7⇒u.c[11]=u.c=1;