Number System

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All even numbers from 2 to 98 inclusive, except those ending 0, are multiplied together. What is the rightmost digit (the units digit) of the product?

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Campus Interview Admin 4 years 4 Answers 1633 views 1

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  2. Krunal Gajjar
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    October 4, 2017 at 11:02 am
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    The rightmost digit = 7

  3. Manish Kumar Thakur
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    October 4, 2017 at 7:42 am
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    from 2 to 10,even digits are 2,4,6,8 excluding 10. if they are multiplied then unit digit=4
    again from 11 to 20, even digits are 12,14,16,18 excluding 20, if they are multiplied unit digit=4
    proceeding in same way we get 4^10, therefore the rightmost digit=6

    Best answer
  4. Sumanth
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    October 3, 2017 at 2:27 pm
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