Question

Find the units digit of the expression ${55}^{725}+{73}^{5810}+{22}^{853}$.

• A. 4
• B. 6
• C. 5

Answer 1

The correct option is B 6

In terms of finding the unit's digit of the expression, (${55}^{725}+{73}^{5810}+{22}^{853}$) is same as ($5^1+{73}^2+{22}^1$). The respective units digit for the three parts of the expression would be: $5+9+2=16\to$ required answer is 6. Option (c) is correct.