How can you use LINQ method syntax to group a list of words by their first letter and then select the count of words in each group?

hard🚀 Application Q9 of 15

C Sharp (C#) - LINQ Fundamentals

Alist.Where(w => w[0]).GroupBy(w => w).Count()

Blist.Select(w => w[0]).GroupBy().Count()

Clist.OrderBy(w => w[0]).Select(w => w.Count())

Dlist.GroupBy(w => w[0]).Select(g => new { Letter = g.Key, Count = g.Count() })

Step-by-Step Solution

Solution:

Step 1: Group words by first letter
Use GroupBy(w => w[0]) to group by first character.
Step 2: Select group key and count
Use Select(g => new { Letter = g.Key, Count = g.Count() }) to get letter and count.
Final Answer:
list.GroupBy(w => w[0]).Select(g => new { Letter = g.Key, Count = g.Count() }) -> Option D
Quick Check:
GroupBy key then select count = list.GroupBy(w => w[0]).Select(g => new { Letter = g.Key, Count = g.Count() }) [OK]

Quick Trick: GroupBy key, then Select group info [OK]

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