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Thought-Process to Discover Knowledge

Welcome to nubtrek.

Books and other education websites provide "matter-of-fact" knowledge. Instead, nubtrek provides a thought-process to discover knowledge.

In each of the topic, the outline of the thought-process, for that topic, is provided for learners and educators.

Read in the blogs more about the unique learning experience at nubtrek.continue

In this page, a simple overview of the divisibility test for `2` is provided.



click on the content to continue..

Which of the following are multiples of `2`?

  • `2,4,6,8,10,12, cdots`
  • `2,4,6,8,10,12, cdots`
  • `1,2,3,cdots`

The answer is "`2,4,6,8,10,12, cdots`"

Consider the multiples of `2` given as `2,4,6,8,10,12, cdots`. Is there any similarity observed in the multiples?

  • all are odd numbers
  • all are even numbers
  • all are even numbers

The answer is "all are even numbers"

Consider the numbers `4` and `5`. Which of these is divisible by `2`?

Check this by long division method.

  • `4`
  • `4`
  • `5`

The answer is "`4`"

Even numbers are divisible by `2`. To check for divisibility by `2`, only the digit in the units place is checked.

Test for Divisibility by `2` : If the digit in the units place is even, then the number is divisible by `2`.

Is `218` divisible by `2`?

  • Yes
  • Yes
  • No

The answer is "Yes". Checking the digit in units place `8`, it is concluded that the number is even and so divisible by `2`.

Is `23` divisible by `2`?

  • Yes
  • No
  • No

The answer is "No". Checking the digit in units place `3`, it is concluded that the number is odd and so NOT divisible by `2`.

                            
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