If H is the harmonic mean between P and Q , then the value of (H / P) + (H / Q) is
[âˆµ H is the harmonic mean between P and Q]
or H / P + H / Q = 2.
The harmonic mean of the roots of the equation
Let the positive numbers a, b, c, d be in A. P. Then abc, abd, acd, bcd are
The sum of the series 1/2 + 1/3 + 1/6 +……. to 9 terms is
The first term of a G.P. whose second term is 2 and sum to infinity is 8 will be
If the sum of the series 2, 5, 8, 11, …… is 60100, then n is