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What is the unit digit of the sum of fir...

What is the unit digit of the sum of first 111 whole numbers

A

4

B

6

C

5

D

0

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X= { The units digit of the sum of 10 consective natural numbers } Find X.

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Knowledge Check

  • What is the mean of the first 20 whole numbers?

    A
    9
    B
    10
    C
    9.5
    D
    10.5
  • Unit digit of product of first ten prime number is

    A
    6
    B
    4
    C
    2
    D
    0
  • What will be the units digit of the squares of the following numbers?

    A
    71
    B
    669
    C
    2533
    D
    30827
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    In a two-digit number, the tens digit is twice the units digit if the sum of its digits is 9. Find the number.

    A number of two digits has 3 for its unit's digit, and the sum of digits is 1/7 of the number itself, The number is

    In a two-digit number, tens digit is a multiple of the units digit. The sum of the number and the number formed by reversing the digits is 132. Which of the folloiwng can be the product of the two digits ?

    In a two-digit number, tens digit is a multiple of the units digit. The sum of the number and the number formed by reversing the digits is 132. Which of the following can be the product of the two digits?