(A) We are given the expression $2^{3} \times 5^{125}$.First,calculate $2^{3} = 8$.Now,the expression becomes $8 \times 5^{125}$.We can rewrite this a

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(A) We are given the expression $2^{3} \times 5^{125}$.First,calculate $2^{3} = 8$.Now,the expression becomes $8 \times 5^{125}$.We can rewrite this as $8 \times 5 \times 5^{124} = 40 \times 5^{124}$.Since any number multiplied by $40$ ends in $0$,the last digit of the expression is $0$.