Apassword is 4 characters long and must consist of 3 letters and one number. if letters cannot be repeated and the password must end with a number, how many possibilities are there?

Answer would be 156,000.

Step-by-step explanation:

A password is 4 characters long and must consists of 3 letters and one number.

Alphabets = 26 letters ( A to Z )

numbers =  10   ( 0 to 9 )

If no repeats are allowed for letters and the password must end with a number. We use the formula :

n = object (26)

r = sample (3)

n = 15,600 × 10 = 156,000

There are 156,000 possibilities.

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!