`a^12-b^12`

The factors of 625 a ^(12) - 81 b ^(12) are :

The geometric mean between -9 and -16 is 12 b. -12 c. -13 d. none of these

The geometric mean between -9 and -16 is 12 b.-12 c.-13 d.none of these

The geometric mean between -9 and -16 is 12 b. -12 c. -13 d. none of these

Two numbers are in the ratio 3:4. If the difference of their squares is 63, then the numbers are a.8,12 b.9,12 c.12,15 d.16,20

If 2x+y+lambda=0 is a normal to the parabola y^2=-8x , then lambda is 12 (b) -12 (c) 24 (d) -24

{{:(a =b ^(2) + 4b -12),(a=-12 +b):} The ordered pair (a,b) satisfies the system of equatin above. What is one possible value of b ?

The variance of a set of data is 144. Then the standard deviation of the data is : A. pm 12 B. 12 C. 44 D. 72

If p is a prime number greater than 3, then (p^(2)-1) is always divisible by (a) 6 but not 12 (b) 12 but not 24(c)24 (d) None of these

If 2x+y+lambda=0 is a normal to the parabola y^(2)=-8x, then lambda is 12 (b) -12 (c) 24 (d) -24