Question

the unit digit of (634)² will be
Tell the answer if you know​

Answer 1

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Q. The unit digit of (634)²⁶² + (634)²⁶³ will be

A. Given, (634)²⁶² + (634)²⁶³

➙ (634)²⁶² (1 + 634)

➙ (634)²⁶² × 635

➙ The unit digit of (634)²⁶² × 635 = The unit digit of (4²⁶² × 5)

We know that,

• The unit digit of 4 to the power of any odd number is 4 and the unit digit of 4 to the power of any even number is 6.

★ The unit digit of (4²⁶² × 5) = The unit digit of (6 × 5)

➙ The unit digit of (6 × 5) = 0

Answer 2

Answer:

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The unit digit of (634)²⁶² + (634)²⁶³ will be

A. Given, (634)²⁶² + (634)²⁶³

➙ (634)²⁶² (1 + 634)

➙ (634)²⁶² × 635

➙ The unit digit of (634)²⁶² × 635 = The unit digit of (4²⁶² × 5)