Express the number 43 in its expanded form. 43=4×10+3×1 Comparing the above equation with the equation given in the question, 43=4×a+3×1 a = 10
If 43Cr−6=43C3r+1, then the value of r is
If x = 2 is a root of equation x2 + 3x - k = 0 then value of k is