Question

Check the numbers which are not divisible by \[2\].
A). \[341\]
B). \[220\]
C). \[518\]
D). \[454\]

Answer 1

Hint: In the given question, we have been given some numbers. We have to check what number(s) is not divisible by the number \[2\]. Now, the numbers which are divisible by \[2\] are called even numbers, while the numbers which are not divisible by \[2\] are called odd numbers. To check for if the number is divisible by \[2\] or not, we check for its last digit. If the last digit is even, then the number is divisible by \[2\] and if the last digit is odd, then the number is not divisible by \[2\].

Complete step by step solution:
We have to check if the number is divisible by \[2\], and we can do that by simply checking if the last digit is even.
For the first number:
\[341\] - the last digit is \[1\], hence it is odd and hence, not divisible by \[2\].
For the second number:
\[220\] - the last digit is \[0\], hence it is even and hence, is divisible by \[2\].
For the third number:
\[454\] - the last digit is \[4\], hence it is even and hence, is divisible by \[2\].
For the fourth number:
\[518\] - the last digit is \[8\], hence it is even and hence, is divisible by \[2\].
Hence, the correct option is option (A).

Additional Information:
When even numbers are divided by \[2\], they leave a remainder of zero, but when odd numbers are divided by \[2\], they leave a remainder of one.

Note: In the given question we had to check for which number was not divisible by \[2\]. We did that by applying the basic knowledge about the numbers divisible by \[2\] – they are even, and to tell if the number is even, we check their last digit. If the last digit is even, the whole number is even. So, we must know the basic properties of the numbers.