chööse the compõunds belöw that are nönaromatic? (A) (B) B (C) -Z:

Let A={a,b,c,d} and B={x,y,z} . Which of the following are relations from A to B? {(a,x),(b,y),(c,z),z}

Let A={a,b,c,d} and B={x,y,z} . Which of the following are relations from A to B? {(y,a),(z,a),(z,c),(y,d)}

If nA(x-a)(x-b)(x-c)(x-z).......(x-z) then the number of terms in the expansion of (a+A)(b+A)(c+A).........(z+A) is

If in A B C , the distances of the vertices from the orthocentre are x, y, and z, then prove that a/x+b/y+c/z=(a b c)/(x y z)

Without expanding, show that "Delta"=|(a-x)^2(a-y)^2(a-z)^2(b-x)^2(b-y)^2(b-z)^2(c-x)^2(c-y)^2(c-z)^2|=2(a-b)(b-c)(c-a)(x-y)(y-z)(z-x)

Without expanding, show that "Delta"=|(a-x)^2(a-y)^2(a-z)^2(b-x)^2(b-y)^2(b-z)^2(c-x)^2(c-y)^2(c-z)^2|=2(a-b)(b-c)(c-a)(x-y)(y-z)(z-x)

If the system of equation x=a(y+z),y=b(z+x),z=c(x+y),(a,b,c!=-1) has a non-zero solution then the value of (a)/(a+1)+(b)/(b+1)+(c)/(c+1) is

If aY+z)=b(z+x)=c(x+y) and out of a,b,c no two of them are equal then show that, (y-z)/(a(b-c))=(z-x)/(b(c-a))(x-y)/(c(a-b))

If (y+z)/(a)=(z+x)/(b)=(x+y)/c then show that (x)/(b+c-a)=(y)/(c+a-b)=(z)/(a+b-c)

If a + b + c != 0 then the number solutions (x,y,z) to the system (b + c)(y + z) - ax = b - c (c + a)(z + x) - by = c - a (a + b) (x + y) - cz = a - b is