Question
What is the value of x (x and y are real numbers)?
Statement I: 2x + 3y = 17 Statement II: 3x − y = 7Solution
ATQ, Statement I alone: one linear equation in two variables ⇒ infinitely many (x,y). Not sufficient. Statement II alone: one linear equation in two variables ⇒ not sufficient. Using both statements together: system of two independent linear equations in two variables ⇒ unique solution for x and y. So together they are sufficient. Thus, both together are sufficient, neither alone is sufficient.
In a rectangular floor of length and breadth of 12 metres and 9 metres, respectively, square tiles each of 3 metre edge length are to be laid. If the co...
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A right circular cone has a base radius of 4 cm and a height of 9 cm. If a cylindrical hole of radius 2 cm is drilled through the axis of the cone, what...
{19.13 2 – 24.86 2 + 84.92% of 501.16} = ?
A hexagonal prism has a base edge of 4 cm and a height of 10 cm. What is the total surface area of the prism?
What is the average number of DELL laptops sold in all the given years?
A collection of related files is called a______.
A circle with radius 8 cm is inscribed in a square. What is the area of the square?
124, 160, 224, ?, 468, 664
Determine the value of 'x' if the average of the numbers 32, 34, 38, 21, 26, and 'x' is 30.
