[A=[[a,b],[b,-a]]" and "MA=A^(2m)],[m in N" for some matrix "M" ,then which "],[" one "],[" of the following is correct? "]

If a + b = 2m^(2), b + c = 6m, a + c = 2 where m is a real number and a le b le c , then which one of the following is correct ?

If the coefficients of a^(m) and a^(n) in the expansion of (1+a)^(m+n) are alpha and beta then which one of the following is correct ?

If the points with the coordinates (a, ma), {b,(m+1)b}, {c,(m+2)c} are collinear, then which one of the following is correct ?

If A =[(a,b,c),(x,y,z),(l,m,n)] is a skew-symmetric matrix,m nthen which of the following is equal to x+ y+ z?

A=[aij]_(mxxn) is a square matrix, if a) m=n b) m>n c) m< n d) none of these

A=[a_(ij)]_(m xx n) is a square matrix,if (a)m

If a^(2)+b^(2)=1,m^(2)+n^(2)=1, then which of the following is true for all values of m,n,a,b