Question

How many two letter words can be formed
using letters from the word SPACE, when
repetition of letters (i) is allowed, (ii) is not
allowed?​

Answer 1

Answer:

i) 25

ii) 20

Step-by-step explanation:

Space is 5 letter word from which we have to form two letter words

i) with repetition

there are two places in which 1st place can be filled with 5 letters and the second letter can also be filled with these five letters.

= 5*5= 25

ii) without repetition

there are two places in which 1st place can be filled with 5 letters and the second letter can also be filled with these 4 letters.

4*5 = 20

Answer 2

Answer:

i) 25 , ii) 20 this is answer.