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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.

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.

slide-show version coming soon