10. Tamara writes $$ 21+3 $$. Which problem could Tamara's expression represent? 4. AR. 13. 3.250 .92 (A) There are 21 dolls. Each friend has 3 dolls. How many friends are there? (13) There are 4 carrots. Each bunny gets 1 carrot. How many bunnles are there? (C) There are 821. Each child gets B21. How many children are there? (D) There are 21 pens. Each sack has 1 pen. How many sacks are there?

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To determine which problem Tamara's expression $$ 21 + 3 $$ could represent, we need to analyze each option and see if it logically corresponds to the addition of 21 and 3.

1. **Option (A)**: There are 21 dolls. Each friend has 3 dolls. How many friends are there?
   - This implies that if each friend has 3 dolls, we would need to divide 21 by 3 to find the number of friends. This does not represent $$ 21 + 3 $$.

2. **Option (B)**: There are 4 carrots. Each bunny gets 1 carrot. How many bunnies are there?
   - This scenario involves 4 carrots and does not relate to the numbers 21 or 3. Thus, it does not represent $$ 21 + 3 $$.

3. **Option (C)**: There are 821. Each child gets 21. How many children are there?
   - This implies that we would divide 821 by 21 to find the number of children. This does not represent $$ 21 + 3 $$.

4. **Option (D)**: There are 21 pens. Each sack has 1 pen. How many sacks are there?
   - This implies that if there are 21 pens and each sack contains 1 pen, then there would be 21 sacks. However, this does not involve the number 3 and does not represent $$ 21 + 3 $$.

None of the options directly correspond to the expression $$ 21 + 3 $$. However, if we consider the context of the expression, it could represent a scenario where there are 21 items and an additional 3 items are added to that total.

Since none of the options fit perfectly, it seems there might be a misunderstanding in the options provided. If we were to create a problem that fits $$ 21 + 3 $$, it could be something like: "There are 21 apples, and I bought 3 more. How many apples do I have in total?"

In conclusion, none of the provided options accurately represent the expression $$ 21 + 3 $$.
None of the provided options accurately represent the expression $$ 21 + 3 $$.

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