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Question 1
The harmonic mean H of two numbers is 
and the arithmetic mean A and geometric mean G satisfy the equation 
. The two numbers are ?
and the arithmetic mean A and geometric mean G satisfy the equation . The two numbers are ?
Question 2
If 
are in HP, then which of the following is/are correct?
are in HP, then which of the following is/are correct?
1) a, b, c are in AP
2) (b + c)2, (c + a)2, (a + b)2 are in GP
Select the correct answer using the code given below.
Question 3
If the positive integers a, b, c, d are in AP, then the numbers abc, abd, acd, bcd are in
Question 4
If 
, b, 
are in HP, then which one of the following is correct?
, b, are in HP, then which one of the following is correct?Question 5
What is value of cot215° + tan215°?
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