GMAT数学题求教If n = 8的11次方 – 8, what is the units digit of n?A.0B.1C.4D.6E.8

GMAT数学题求教If n = 8的11次方 – 8, what is the units digit of n?A.0B.1C.4D.6E.8
GMAT数学题求教
If n = 8的11次方 – 8, what is the units digit of n?
A.0
B.1
C.4
D.6
E.8

GMAT数学题求教If n = 8的11次方 – 8, what is the units digit of n?A.0B.1C.4D.6E.8
C
n = 8^11 - 8 = 8589934584,因此n的个位数为4.
速算的话你可以记着8的各个幂的个位数依次是8、4、2、6,所以11次方的个位数是2,减8以后是4.