Question

find the number of five letter wordsi that can be formed using letter that would consider how many of them begin with see how many of the men with our home and how many of them begin with c and end with r

Answer 1

total no. of letters... c, o, n, s, i, d, e, r

total no. of letters which can be formed..

6720

letters starting with c:

lets have 5 blanks

_ _ _ _ _  1 * 7 * 6* 5* 4

on first place a letter c.. then for second space we have 7 letters.. for third 6 letters remain.. then for 2nd 5 letters and for last blank we have 4 letters to choose from..

so multiplying all..

or we can write as

1* 7C8 * 6C7* 5C6 * 4C5

= 840

ENDING WITH R..

same process like above

fix letter r at last and then consider how many letters are available for each blank..

answer will be...

840

ENDING WITH R AND STARTING WITH C

fix r and c at last and first respectively

then

c _ _ _ r  

then same as first..

we have 6 letters for 2nd,  5 for 3rd and 4 for 4th blank

answer:

120

Plz mark it brainlist my hand started paining while writing it