MATHEMATICS CLASS X>Chapter 3 - Pair of Linear Equations in Two Variables>EXERCISE 3.11>Q 24

MEDIUM

10th CBSE

IMPORTANT

Earn 100

In a competitive examination, one mark is awarded for each correct answer while $1 / 2$ mark is deducted for every wrong answer. Jayanti answered $120$ questions and got $90$ marks. How many questions did she answer correctly.

Important Questions on Pair of Linear Equations in Two Variables

MEDIUM

10th CBSE

IMPORTANT

MATHEMATICS CLASS X>Chapter 3 - Pair of Linear Equations in Two Variables>EXERCISE 3.11>Q 25

A shopkeeper gives books on rent for reading. She takes a fixed charge for the first two days, and an additional charge for each day thereafter. Latika paid

₹ 22

for a book kept for

6

days, while Anand paid

₹ 16

for the book kept for four days. Find the fixed charges and charge for each extra day.

MEDIUM

10th CBSE

IMPORTANT

MATHEMATICS CLASS X>Chapter 3 - Pair of Linear Equations in Two Variables>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 1

Write the value of

k

for which the system of equations

x + y - 4 = 0

and

2 x + k y - 3 = 0

has no solution.

MEDIUM

10th CBSE

IMPORTANT

MATHEMATICS CLASS X>Chapter 3 - Pair of Linear Equations in Two Variables>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 2

Write the value of $k$ for which the system of equations has infinitely many solutions.

$2 x - y = 5$

$6 x + k y = 15$ .

MEDIUM

10th CBSE

IMPORTANT

MATHEMATICS CLASS X>Chapter 3 - Pair of Linear Equations in Two Variables>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 3

Write the value of

k

for which the system of equations

3 x - 2 y = 0

and

k x + 5 y = 0

has infinitely may solutions.

MEDIUM

10th CBSE

IMPORTANT

MATHEMATICS CLASS X>Chapter 3 - Pair of Linear Equations in Two Variables>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 4

Write the value of

k

for which the system of equations

x + k y = 0,

2 x - y = 0

has unique solution.

MEDIUM

10th CBSE

IMPORTANT

MATHEMATICS CLASS X>Chapter 3 - Pair of Linear Equations in Two Variables>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 5

Write the set of values of

a

and

b

for which the following system of equations has infinitely many solutions:

2 x + 3 y = 7

,

2 a x + (a + b) y = 28

MEDIUM

10th CBSE

IMPORTANT

MATHEMATICS CLASS X>Chapter 3 - Pair of Linear Equations in Two Variables>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 6

For what value of

k

, the following pair of linear equation has infinitely many solutions:

10 x + 5 y - (k - 5) = 0

,

20 x + 10 y - k = 0

MEDIUM

10th CBSE

IMPORTANT

MATHEMATICS CLASS X>Chapter 3 - Pair of Linear Equations in Two Variables>VERY SHORT ANSWER TYPE QUESTIONS (VSAQs)>Q 7

Write the number of solutions of the pair of linear equations:

x + 2 y - 8 = 0

,

2 x + 4 y = 16