1. two rooks on a 8 x 8 chessboard are in an attacking position if they lie on the same row or the same column. (6) how many ways can you place 8 identical rooks so that no two attack each other 7 (note since the rooks are identical, so interchanging two rooks does not count as a separate placement)? (ii) how many ways can you do this if you have 4 identical wooden and 4 identical marble rooks? (it) how many ways can you do this if all 8 rooks are different ?

5104.38 inches

step-by-step explanation:

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)