How many 3 letter words, with or without meaning can be formed using the letters of the word JOURNALIST if repetition is not allowed? A) 40 320
B) 56
C) 256
D) 512

720 ways

Step-by-step explanation:

Word : JOURNALIST = 10

Number of letters = 3

Using permutation formula:

10P3

Recall : nPr = n! / (n-r)!

10P3 = 10! / (10 - 3)!

10P3 = 10! / 7!

10P3 = 10 * 9 * 8

10P3 = 720 ways

step-by-step explanation:

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk