Question

Find the unit place: 1+22+33+44+55+66 ?​

Answer 1

Answer:

For given equality, the unit place is $1$

Step-by-step explanation:

We are given equality as:

$1+22+33+44+55+66 =?$

We need to determine the unit digit of the result of above equation.

Adding $1+22+33+44+55+66$, we get $1+22+33+44+55+66 =221$

Now,

Unit place of a number is the digit which is located at the end.

For example, In $24682$, $2$ is located at the end, so unit digit is $2$.

Hence, for given equality, the unit place is $1$

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Answer 2

Concept:

Addition is one of the basic operations of mathematics used to simplify the expressions provided.

Given:

We are given that:

1 + 22 + 33 + 44 + 55 + 66

Find:

We need to find the unit place of the value obtained by adding the digits.

Solution:

We have:

1 + 22 + 33 + 44 + 55 + 66

= 23 + 77 + 121

= 100 + 121

= 221

The unit place of 221 is:

= 1

Therefore, we get that the unit place of the expression 1 + 22 + 33 + 44 + 55 + 66 is 1.

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