Home
Class 12
MATHS
Statement 1 If a,b,c are three positive ...

Statement 1 If a,b,c are three positive numbers in GP, then `((a+b+c)/(3))((3abc)/(ab+bc+ca))=(abc)^((2)/(3))`.
Statement 2 `(AM)(HM)=(GM)^(2)` is true for positive numbers.

A

Statement 1 is true, Statement 2 is true, Statement 2 is a corrct explanation for Statement 1.

B

Statement 1 is true, Statement 2 is true, Statement 2 is not a correct explanation for Statement 1.

C

Statement 1 is true, Statement 2 is false.

D

Statement 1 is false, Statement 2 is true.

Text Solution

Verified by Experts

The correct Answer is:
C

If a,b, be two real positive and unequal numbers, then `AM=(a+b)/(2),GM=sqrt(ab)` and`HM(2ab)/(a+b)`
`:.(AM)(HM)=(GM)^(2)`
This result will be true for n numbers, if they are in GP.
Hence, Statement 1 is true, Statement 2 is false.
Promotional Banner

Similar Questions

Explore conceptually related problems

Statement 1 If a and b be two positive numbers, where agtb and 4xxGM=5xxHM for the numbers. Then, a=4b . Statement 2 (AM)(HM)=(GM)^(2) is true for positive numbers.

a,b,c are positive numbers. Prove that, a^(2) + b^(2) + c^(2) gt ab + bc + ca

If a,b,c,d are positive real numbers such that (a)/(3) = (a+b)/(4)= (a+b+c)/(5) = (a+b+c+d)/(6) , then (a)/(b+2c+3d) is:-

If a, b, c are three positive real numbers such that abc^(2) has the greatest value (1)/(64) , then

If a,b,c are real numbers such that 3(a^(2)+b^(2)+c^(2)+1)=2(a+b+c+ab+bc+ca) , than a,b,c are in

For any three positive real numbers a , b and c ,9(25 a^2+b^2)+25(c^2-3a c)=15 b(3a+c)dot Then :

If a, b, c and d are in G.P. show that (a^2+b^2+c^2)(b^2+c^2+d^2) = (ab+bc+cd)^2

Statement-1 (Assertion and Statement- 2 (Reason) Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select the correct choice as given below. Statement- 1 If A, B, C are matrices such that abs(A_(3xx3))=3, abs(B_(3xx3))= -1 and abs(C_(2xx2)) = 2, abs(2 ABC) = - 12. Statement - 2 For matrices A, B, C of the same order abs(ABC) = abs(A) abs(B) abs(C).

If a,b,c are three terms in A.P and a^(2), b^(2), c^(2) are in G.P. and a + b + c = (3)/(2) then find a. (where a lt b lt c )

If three positive real numbers a,b,c are in AP such that abc=4, then the minimum value of b is