Question : The units digits of the number $6^{256}-4^{256}$ is:
Option 1: 7
Option 2: 0
Option 3: 1
Option 4: 4
Answer (1)
17th Jan, 2024
Correct Answer: 0
Solution :
Given: Number = $6^{256}-4^{256}$
Any power of 6 gives the unit digit 6 and for all even powers of 4, the unit digit is 6.
Thus, after subtracting, the unit digit will be (6 – 6) = 0
Hence, the correct answer is 0.
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