Question

The unit digit of [($25^{43}$ ×$56^{42}$) +$456^{25} +$23^{42}$+$76^{23}$ is

• A. 1
• B. 3
• C. 7
• D. 9

Answer 1

Answer:

A. 1

The resultant value of the unit digits = [(5 × 6) + 6 + 9 + 6] = (30 + 6 + 9 + 6) = 51 So, the unit digit of the expression is 1.