The AM of 10 numbers is 20, AM of 30 numbers is 60. AM of combined data is ……………

Mean of 8, 6, 4, x, 3, 6, 0 is 4, then x =

Mean of -3, -2, -1,0, 1, 2, 3 is

The median of 8, 10, 4, 3, 2, 11, 1 is

The median of scores $x_1,x_{2}x\_1\; ,\; x\_2$ and $2x_{1}2x\_1$ , is 6 and $x_{1}x\_1$ < $2x_{1}2x\_1$ < $x_{2}x\_2$  then $x_{1}x\_1$ = ………

The range of first n natural numbers is ……………

Median of 1 to 9 natural numbers is ……………

Median of $\frac{3}{4},\frac{1}{2},\frac{2}{3},\frac{1}{6},\frac{7}{12}\backslash frac\{3\}\{4\}\; ,\; \backslash frac\{1\}\{2\}\; ,\backslash frac\{2\}\{3\}\; ,\; \backslash frac\{1\}\{6\}\; ,\; \backslash frac\{7\}\{12\}$ is

Mean of a – 2d, a – d, a + d and a + 2d is

The mean of first 5 odd multiples of 5 is