Geometric Mean

IMPORTANT

Geometric Mean: Overview

This topic consists of various concepts like Geometric Means (G.M.) of Two Numbers,n- Geometric Means between Two Numbers,Relation among Single G.M. and n G.M's between Two Numbers, etc.

Important Questions on Geometric Mean

MEDIUM
IMPORTANT

Let A1 and A2 be two arithmetic means and G1, G2 and G3 be three geometric means of two distinct positive numbers. Then G14+G24+G34+G12G32 is equal to

HARD
IMPORTANT

If G be the geometric mean between two given numbers and A1, A2 be the arithmetic means between them. Then, G2

EASY
IMPORTANT

The product of three geometric means between 4 and 14 is?

MEDIUM
IMPORTANT

Find the geometric mean of 133, 141, 125, 173, 182

EASY
IMPORTANT

If an+2+bn+2an+bn is geometric mean between a and ba,b>0 and ab, then n is

EASY
IMPORTANT

The arithmetic mean of two numbers is 30 and geometric mean is 24 find the two number

EASY
IMPORTANT

Insert four geometric means between the numbers 3 and 96?

 

MEDIUM
IMPORTANT

Four geometric means between 4 and 972 are _____.

MEDIUM
IMPORTANT

Let a,b be distinct positive real numbers, whose geometric mean equals at-99+bt-99at-100+bt-100. Then t must equal

MEDIUM
IMPORTANT

If A and G are respectively the A.M. and G.M. of two distinct positive numbers a and b, find the value of G2-a2aA-G2.

MEDIUM
IMPORTANT

If G is the G.M. between two positive numbers a and b, show that

1G2-a2+1G2-b2=1G2.

MEDIUM
IMPORTANT

If one G.M. G and two A.M.’s A1, A2 are inserted between two positive numbers, then show that G2=(2A2-A1)(2A1-A2).

HARD
IMPORTANT

Between two positive numbers. one A.M. A also two G.M.'s G1,G2 are inserted. Prove that G12G2+G22G1=2A

MEDIUM
IMPORTANT

One of two positive real numbers exceeds the other by 6. A.M. between these two numbers exceeds their positive G.M. by unity. Find the numbers.

MEDIUM
IMPORTANT

The product of two positive real numbers in 128 and product of n number of positive G.M.s between those two numbers is (3n+2)th power of 2. Find the value of n.

HARD
IMPORTANT

If x is the A.M. between y and z, and 1x is the A.M. of 1yand 1z, then show that y,x,z are in G.P.

MEDIUM
IMPORTANT

If a,b,c are in A.P., b,c,d are in G.P. and. c,d,e are in A.P., prove that a,c,e are in G.P.

HARD
IMPORTANT

If a,b,c are in G.P. and ax1=by1=cz1, then show that x,y,z are in A.P.

HARD
IMPORTANT

If a is the A.M. of two positive numbers b and c and two G.M.'s between b and c are G1 and G2, prove that G13+G23=2abc.

HARD
IMPORTANT

If a,b,c are in G.P. and the equation

ax2+2bx+c=0 and dx2+2ex+f=0 have a common root, then show that da,eb,fc are in A.P.