Question
If a, 1, b are in arithmetic progression and 1, a, b are
in geometric progression, then a and b are respectively equate to _______ (where a ≠b).Solution
Given a, 1, and b are in AP and 1, a, and b are in GP: From AP= 1- a=b-1 b=2- a  … (1) From GP- b = a²    … (2) from Eq (1) and Eq (2) a² = 2-a a²+a-2=0 a2+2a- a -2 =0 a = 1 or - 2 Since a ≠1: a = -2 b = a² = 4 So, a = -2 and b = 4. Alternate method- According to the option- (a + b)/2 = 1 (a + b) = 2 Put the value of a and b in the option and satisfied. Taking option 2. (-2 + 4) = 2 2 = 2 (satisfied)
A method of asexual propagation in which a stem is made to produce roots while still attached to the parent plant is calledÂ
Best export variety of mango is
It is the practice of smoking under trees to induce early flowering in mango., The popular practice is said to be
Which plant hormone is primarily responsible for apical dominance, stimulating cell elongation and growth, particularly in stems and young leaves?
Litchi is commercially propagated by ___ method.
India is known as home of _________
Which of the following is used as rootstock for sapota?
Kinnow mandarin is a cross between King andÂ
Palmarosa comes under the family of ___________ .
Which plant species does not possess xylem vessels?
Relevant for Exams:
