Question 2 :
If 1/2 is a root of the equation x + kx – = 0, then the value of k is
Question 3 :
Which constant must be added and subtracted to solve the quadratic equation 9x^2 + x – √2= 0 by the method of completing the square?
Question 4 :
The quadratic equation 2x – √5x + 1 = 0 has
Question 7 :
Which of the following equations has the sum of its roots as 3?
Question 8 :
In an AP, if d = – 4, n = 7 and an= 4, then a is equal to
Question 9 :
The 11th term of an AP – 5,-5/2 , 0, 5/2 …
Question 10 :
The 21st term of an AP whose first two terms are – 3 and 4, is
Question 11 :
Which term of an AP : 21, 42, 63, 84,… is 210?
Question 12 :
The 4th term from the end of an AP – 11, -8,-5,…, 49 is
Question 13 :
The sum of first 16 terms of the AP 10, 6, 2, … is
Question 14 :
In an AP, if a = 1, an = 20 and Sn = 399, then n is equal to
Question 16 :
In an AP, if a = 3.5, d = 0 and n = 101, then a will be
Question 17 :
The list of numbers – 10, – 6, – 2, 2,… is
Question 18 :
The first four terms of an AP whose first term is – 2 and the common difference is-2 are
Question 19 :
If the 2nd term of an AP is 13 and 5th term is 25, what is its 7th term?
Question 20 :
If the common difference of an AP is 5, then what is a18 – a13 ?