Which of the following is the correct syntax to select the square of each number from an integer array numbers using LINQ?

easy📝 Syntax Q3 of 15

C Sharp (C#) - LINQ Fundamentals

Which of the following is the correct syntax to select the square of each number from an integer array numbers using LINQ?

Avar result = from n in numbers group n * n by n;

Bvar result = from n in numbers where n * n;

Cvar result = from n in numbers select n + n;

Dvar result = from n in numbers select n * n;

Step-by-Step Solution

Solution:

Step 1: Understand projection of transformed data
The select clause can project transformed values, here n * n for square.
Step 2: Verify syntax correctness
where is for filtering, not projection; group by groups data; select n + n projects double, not square.
Final Answer:
var result = from n in numbers select n * n; -> Option D
Quick Check:
Select projects transformed values [OK]

Quick Trick: Select projects expressions, where filters [OK]

Common Mistakes:

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