Let p,q ∈ 1,2,3, 4 . The number of equations of the form px 2 +qx + 1 = 0 having real…
Mathematics · JEE Advanced · NTA Exams — Permutations and Combinations
Let p,q ∈ {1,2,3, 4}. The number of equations of the form px2 +qx + 1 = 0 having real roots must be
- 15
- 9
- 7
- 8
Answer
(C) 7
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- The total number of ways in which 5 balls of different colours can be distributed among 3 persons so that…
- The number of subsets of the set A = a 1 , a 2 , . . . . , a n which contain even number of elements is
- The sides AB, BC and CA of a triangle ABC have a, b and c interior points on them respectively, then find the…
- The number of ways in which the sum of upper faces of four distinct dices can be six.
- The number of times of the digits 3 will be written when listing the integer from 1 to 1000 is :
- There are 20 questions in a questions paper. If no two students Explanation: e the same combination of…
- There are 10 questions, each question is either True or False. Number of different sequences of incorrect…
- Six cards and six envelopes are numbered 1, 2, 3, 4, 5, 6 and cards are to be placed in envelopes so that…
More Permutations and Combinations questions · Browse all practice questions