Question

What is the unit digit in {(264)^102 +(264) ^103}?​

Answer 1

Answer:

Unit digit in (264)100 is also 6. Therefore, the unit digit in (264)102 + (264)103 is 6 + 4 = 10 i.e. 0.

Answer 2

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(4)103 gives unit digit of the product (6 x 4) i.e., 4. Hence, unit's digit in (264)m + (264)103 = unit's digit in (6 + 4) = 0.