Question

21+21+21+21+21+21+21+21+21+21+21

Answer 1

Hi friend,

21+21+21+21+21+21+21+21+21+21+21

= 42+42+42+42+42+21

= 84+84+63

= 168+63

= 231

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Hope this helped u...

Answer 2

Answer:

The solution of the given expression will be 231.

Step-by-step explanation:

Given: $21+21+21+21+21+21+21+21+21+21+21$

We have to solve the above expression.

• As we know, adding two or more numbers together is known as an addition.
• The addition is denoted by a symbol(+).

Following are the properties of addition:

1. Identity property of zero.

2. Inverse property.

3. Commutative property.

4. Associative property.

We are solving in the following way:

We have,

$21+21+21+21+21+21+21+21+21+21+21$

Solving the above expression further we get,

$\begin{array}{l}=21+21+21+21+21+21+21+21+21+21+21 \\=42+21+21+21+21+21+21+21+21+21 \\=63+21+21+21+21+21+21+21+21 \\=84+21+21+21+21+21+21+21 \\=105+21+21+21+21+21+21 \\=126+21+21+21+21+21 \\=147+21+21+21+21 \\=168+21+21+21 \\=189+21+21 \\=210+21 \\=231\end{array}$

NOTE:

Q. Solve: $21+21+21+21+21+21+21+21+21+21+21$