If eleven A.M. ‘s are inserted between 28 and 10, then find the number of integral A.M. ‘s.

If a ,b ,c ,d ,e ,f are A.M.s between 2 and 12, then find the sum a+b+c+d+e+fdot

'n' A.M's are inserted between a and 2b, and then between 2a and b. If p^(th) mean in each case is a equal, a/b is equal to

Insert four G.M.s between 2 and 486.

If (a^(n)+b^n)/ (a^(n-1) +b^(n-1)) is the A.M. between a and b, then find the value of n.

The A.M. and H.M. between two numbers are 27 and 12, respectively, then find their G.M.

If nine arithmetic means and nine harmonic means are inserted between 2 and 3 alternatively, then prove that A+6//H=5 (where A is any of the A.M.'s and H the corresponding H.M.) dot

Insert four H.M.s between 2/3 and 2/13.

Observe the below pie diagram. It shows the percentages of number of vehicles passing a signal in a town between 8 am and 10 am (ii) If the number of two -wheelers is 1200 , find the number of all vehicles .

The A.M. and H.M. between two numbers are 27 and 122, respectively, then find their G.M.