Question
If ‘Gold’ is called as ‘Iron’, ‘Iron’ is
called as ‘Silver’, and ‘Silver’ is called as ‘Platinum’, then, which metal is used to make jewellery?Solution
The answer is Gold but Gold is called as Iron. So, the answer is Iron.
I. 6x² - 23x + 7 = 0
II. 6y² - 29y + 9 = 0
Solve the quadratic equations and determine the relation between x and y:
Equation 1: 6x² - 24x + 18 = 0
Equation 2: 5y² - 20y + 15 = 0
I. 4x² - 21 x + 20 = 0
II. 8y² - 22 y + 15 = 0
For 3x² − 10x − 8 = 0, find (1/α + 1/β).
I. x2 – 13x + 36 = 0
II. 3y2 – 29y + 18 = 0
If x and y satisfy x² + y² = 25 and x + y = 7, find xy.
I. x2 – 3(x + 5) = -11
II. y2 – 4(y + 2) = -2y
Quantity I: A vessel contains a mixture of milk and water in the ratio of 7 : 5. If 9 litre of mixture is sold and replaced by same amount of water then...
The nth term of a sequence is n² + 3n + 1. Find the difference between the 20th and 10th terms.
