Find the number of possible call letters to a radio station (7 letters long) if the first letter must be a w or a k and no letter is repeated.

255,024,000 possible call letters.

Step-by-step explanation:

call letters to a radio station  is 7 letters long

the first letter must be a W or a K . No letters are repeated.

First letter have only two possibility.

Total of 26 letters in alphabet. First letter must be W or K. So remaining 25 letters.

Remaining 6 letters can be any alphabet (25 letters)

No letters are repeated. So second letters have 25 possibility

Third letter have 24 possibility and so one

So, 255,024,000 possible call letters.

hkhkhkhkhkhkhk

step-by-step explanation: