If the arithmetic mean of `x ,\ x+3,\ x+6,\ x+9,` and `x+12` is 10, the `x=` (a) 1 (b) 2 (c) 6 (d) 4

If the arithmetic mean of 7,\ 5,\ 13 ,\ x and 9 is 10 , then the value of x is (a) 10 (b) 12 (c) 14 (d) 16

If the arithmetic mean of 7,\ 8,\ x ,\ 11 ,\ 14 is x , then x= (a) 9 (b) 9.5 (c) 10 (d) 10.5

If the arithmetic mean of 7,\ 8,\ x ,\ 11 ,\ 14 is x , then x= (a) 9 (b) 9.5 (c) 10 (d) 10.5

If the arithmetic mean of 7,5,13,x and 9 is 10, then the value of x is 10 b) 12(c)14(d)16

If x/2-4=x/3-1, then x= (a)3 (b) 6 (c)18 (d) 2

If x/6+x/4=x/2+3/4, then x= (a) 9 (b) 6 (c) -9 (d) 4

The arithmetic mean of 6, 10, x and 12 is 8 . The value of x is

If (x-2)/3=(2x-1)/3-1, then x= (a) 2 (b) 4 (c) 6 (d) 8

If (2^3)^2=4^x ,\ then 3^x= (a)3 (b) 6 (c) 9 (d) 27

(-2)x\ (-3)x\ 6\ x\ (-1) is equal to (a)36 (b) -36 (c) 6 (d) -6