Question
If (x – 3) is a factor of (x2 + 4qx –
2q), then the value of q is:Solution
(x – 3) is a factor of (x2 + 4qx – 2q) so, x – 3 = 0 => x = 3 Put, x = 3 in x2 + 4qx – 2q and equate to zero. => x2 + 4qx – 2q = 0 => (3)2 + 4 × q × 3 – 2q = 0 => 9 + 12q – 2q = 0 => 12q – 2q = -9 => q = -9/10
A man invested a sum of Rs 60,000. He invested some part at 8 % p.a. and remaining at 8.5% p.a. How much money did he invest at 8 % p.a.? Statement I: T...
The cost price of an article is Rs. 600. How much profit did a trader get by selling the article, if it was sold at 15% discount?
I: The trader ...
Janaki leaves her home everyday at 7:55 a.m and reaches at 9: 25 a.m. However, one day she left her home at 7:55 a.m. but reached office at 09:20:30 a.m...
How many students scored at least 40% marks in an exam? A total of 720 candidates appeared for the exam.
Statement I: One-fifth of the candidates...
Amar, Akbar and Anthony invested Rs 120000 in a business in ratio 5:3:2 respectively. What is the profit % earned by them after a year?
Statemen...
What is the profit percent or loss percent incurred in the transaction?
I. 5% discount is given on the marked price.
II. Cost price is 10%...
What is the probability of getting two white balls from a box containing only white and blue balls?
Statement I : There are total 72 balls in th...
What is the speed of man in still water?
Statement I: The speed of man in still water is twice the speed of the stream.
Statement II: In...
What is the average of L, 50, 76, 82, M and N?
I. L is six more than M.
II. N is four less than L.
What is the capacity of a cylindrical tank?
I. The radius of the base is half of its height, which is 42 meters.
II. The area of the base ...
Relevant for Exams:
