Question

4.
The number of terms in the expansion
of (x + y + z)10 is​

Answer 1

Answer:

Step-by-step explanation:

There would be 66 terms.

If you look at the question from a Permutations and Combinations approach, the answer is simply ¹²C² i.e. non negative integral solutions.

Consider (a+b)² = a²+2ab+b²

Note that total the power of every term is 2. (a¹b¹ = 1+1=2)

Therefore the question simply becomes in how many ways can 10 chocolates be distributed amongst 3 people?

Non negative integral solutions will give you the answer.

Ans: ¹²C²

Answer 2

Answer:

Step-by-step explanation:

this is answer