Question

Pick out an even number.
\[123,246,145,279\]

Answer 1

Hint: From the given list of numbers, in order to find an even number, we must be checking the ones place or the units digit of each number given. If the unit digits would be any number from \[0,2,4,6,8\], then we can conclude that the given number is an even number.

Complete step-by-step solution:
Now let us learn all about even numbers. There are two types of numbers in the number system, they are: even numbers and odd numbers. Even numbers are those numbers which end with \[0,2,4,6,8\]. All the even numbers are divisible by two. The only even number that is prime is \[2\]. We can differentiate a number as odd or even by dividing by two. If the remainder obtained would be \[0\], then the number is even or else the number is odd.
Now let us find out the even number from the given list of numbers.
We are given the numbers \[123,246,145,279\].
We will be using the method of checking the unit's place to determine the even number.
Let us consider each number.
Firstly, we have \[123\]
The digit in one's place is \[3\].
So the given number is not even.
Now we have \[246\].
The digit in the unit's place is \[6\].
Hence, \[246\] is an even number.
The next number is \[145\].
The digit in one's place is \[5\].
So the number is not even.
Now we have the number \[279\]
The digit in the unit's place is \[9\].
Hence the number is not even.
\[\therefore \] The number that is even from the list of given numbers is \[246\].

Note: We can solve this problem or check for even numbers by dividing them by two. We must know that the sum of two even numbers or sum of two odd numbers always gives the result an even number.