[23/11/2020]Lecture 5 : Concepts of Unit digits, Learn Factorial,unit digits Big number having large indices

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22 thoughts on “[23/11/2020]Lecture 5 : Concepts of Unit digits, Learn Factorial,unit digits Big number having large indices

        1. Right, when power is divisible by 4 and remainder comes 0 then simply take power as 4 and c what comes at unit place…7⁴, so unit digit is 1.

    1. 697 is given under factorial , this means !697 =1×2×3×4×4×….×697 , hence 4 is a factor of !697…
      Now as per rule of powers wen Right, when power is divisible by 4 and remainder comes 0 then simply take power as 4 and see what comes at unit place…2⁴, so unit digit is 6.

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