Mathematics Standard - Outside Delhi Set 1 2023-2024 English Medium Class 10 Question Paper Solution

The value of k for which the system of equations 3x − y + 8 = 0 and 6x − ky + 16 = 0 has infinitely many solutions, is ______.

−2

2

`1/2`

`−1/2`

Point P divides the line segment joining the points A(4, –5) and B(1, 2) in the ratio 5:2. Co-ordinates of point P are ______.

`(5/2, (-3)/2)`

`(11/7, 0)`

`(13/7, 0)`

`(0, 13/7)`

The common difference of an A.P. in which a₁₅ − a₁₁ = 48, is ______.

12

16

−12

−16

The quadratic equation x² + x + 1 = 0 has ______ roots.

Real and Equal

Irrational

Real and distinct

Not-real

If the HCF (2520, 6600) = 40 and LCM (2520, 6600) = 252 × k, then the value of k is ______. 

1650

1600

165

1625

In the given figure ΔABC is shown. DE is parallel to BC. If AD = 5 cm, DB = 2.5 cm and BC = 12 cm, then DE is equal to ______. 

10 cm

6 cm

8 cm

7.5 cm

If sin θ = cos θ, (0° < θ < 90°), then value of (sec θ · sin θ) is ______.

`1/sqrt2`

`sqrt2`

1

0

Two dice are rolled together. The probability of getting the sum of the two numbers to be more than 10, is ______.

`1/9`

`1/6`

`7/12`

`1/12`

If α and β are zeroes of the polynomial 5x² + 3x − 7, the value of `1/α + 1/β` is ______.

`-3/7`

`3/5`

`3/7`

`-5/7`

The perimeters of two similar triangles ABC and PQR are 56 cm and 48 cm respectively. PQ/AB is equal to ______.

`7/8`

`6/7`

`7/6`

`8/7`

AB and CD are two chords of a circle intersecting at P. Choose the correct statement from the following:

ΔADP ~ ΔCBA

ΔADP ~ ΔBPC

ΔADP ~ ΔBCP

ΔADP ~ ΔCBP

If value of each observation in a data is increased by 2, then median of the new data ______.

increases by 2

increases by 2n

remains same

decreases by 2

A box contains cards numbered 6 to 55. A card is drawn at random from the box. The probability that the drawn card has a number which is a perfect square, is ______.

`7/50`

`7/55`

`1/10`

`5/49`

In the given figure, tangents PA and PB to the circle centred at O, from point P are perpendicular to each other. If PA = 5 cm, then length of AB is equal to ______.

5 cm

`5sqrt2` cm

`2sqrt5` cm

10 cm

XOYZ is a rectangle with vertices X(-3, 0), O(0, 0), Y(0, 4) and Z(x, y). The length of its each diagonal is ______.

5 units

`sqrt5` units

x² + y² units

4 units

Which term of the A.P. −29, −26, −23, ....., 61 is 16?

11^th

16^th

10^th

31^th

In the given figure, AT is tangent to a circle centred at O. If ∠CAT = 40°, then ∠CBA is equal to ______. 

70°

50°

65°

40° 

After an examination, a teacher wants to know the marks obtained by maximum number of the students in her class. She requires to calculate ______ of marks.

Median

Mode

Mean

Range

Assertion (A): If sin A `1/3` (0° < A < 90°), then the value of cos A is `(2sqrt2)/3`.

Reason (R): For every angle θ, sin²θ + cos²θ = 1.

Both Assertion (A) and Reason (R) are true. Reason (R) is the correct explanation of Assertion (A).

Both Assertion (A) and Reason (R) are true. Reason (R) does not give correct explanation of (A).

Assertion (A) is true but Reason (R) is not true. 

Assertion (A) is not true but Reason (R) is true.

Assertion (A): Two cubes each of edge length 10 cm are joined together.
The total surface area of newly formed cuboid is 1200 cm².

Reason (R): Area of each surface of a cube of side 10 cm is 100 cm^2.

Both Assertion (A) and Reason (R) are true. Reason (R) is the correct explanation of Assertion (A).

Both Assertion (A) and Reason (R) are true. Reason (R) does not give correct explanation of (A).

Assertion (A) is true but Reason (R) is not true.

Assertion (A) is not true but Reason (R) is true. 

Can the number (15)ⁿ, n being a natural number, end with the digit 0? Give reasons.

Find the type of triangle ABC formed whose vertices are A(1, 0), B(−5, 0) and C(−2, 5).

Evaluate:

2 sin² 30° sec 60° + tan² 60°.

If 2 sin (A + B) = `sqrt3` and cos (A − B) = 1, then find the measures of angles A and B. 0 ≤ A, B, (A + B) ≤ 90°.

In the given figure, AB and CD are tangents to a circle centred at O. Is ∠BAC = ∠DCA? Justify your answer. 

In what ratio is the line segment joining the points (3, −5) and (−1, 6) divided by the line y = x? 

A(3, 0), B(6, 4) and C(−1, 3) are vertices of a triangle ABC. Find length of its median BE. 

If the sum of first m terms of an A.P. is same as sum of its first n terms (m ≠ n), then show that the sum of its first (m + n) terms is zero. 

In a A.P., the sum of the three consecutive terms is 24 and the sum of their squares is 194. Find the numbers.

Prove that `sqrt(5)` is an irrational number. 

In the given figure, PQ is tangent to a circle centred at O and ∠BAQ = 30°, show that BP = BQ. 

In the given figure, AB, BC, CD and DA are tangents to the circle with centre O forming a quadrilateral ABCD. 

Show that ∠AOB + ∠COD = 180°

Prove that `(1 + sec θ - tan θ)/(1 + sec θ + tan θ) = (1 - sin θ)/(cos θ)`.

In a test, the marks obtained by 100 students (out of 50) are given below: 

Find the mean marks of the students. 

In a 2-digit number, the digit at the unit's place is 5 less than the digit at the ten's place. The product of the digits is 36. Find the number. 

Using graphical method, solve the following system of equations:

3x + y + 4 = 0 and 3x − y + 2 = 0 

Tara scored 40 marks in a test, getting 3 marks for each right answer and losing 1 mark for each wrong answer. Had 4 marks been awarded for each correct answer and 2 marks been deducted for each wrong answer, then Tara would have scored 50 marks. Assuming that Tara attempted all question, find the total number of questions in the test. 

If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points, then prove that the other two sides are divided in the same ratio.

Sides AB and AC and median AD of a triangle ABC are respectively proportional to sides PQ and PR and median PM of another triangle PQR. Show that ΔABC ~ ΔPQR. 

From the top of a 45 m high light house, the angles of depression of two ships, on the opposite side of it, are observed to be 30° and 60°. If the line joining the ships passes through the foot of the light house, find the distance between the ships. (Use `sqrt3` =1.73) 

The perimeter of a certain sector of a circle of radius 5.6 m is 20.0 m. Find the area of the sector. 

A ball is thrown in the air so that t seconds after it is thrown, its height h metre above its starting point is given by the polynomial h = 25t − 5t². 

Observe the graph of the polynomial and answer the following questions:

1. Write zeroes of the given polynomial.    [1]
2. Find the maximum height achieved by ball.     [1]
3. 
   
   1. After throwing upward, how much time did the ball take to reach to the height of 30 m?    [2]
                                OR 
   2. Find the two different values of t when the height of the ball was 20 m.    [2]

The word ‘circus’ has the same root as ‘circle’. In a closed circular area, various entertainment acts including human skill and animal training are presented before the crowd. 

A circus tent is cylindrical upto a height of 8 m and conical above it. The diameter of the base is 28 m and total height of tent is 18.5 m.

Based on the above, answer the following questions:

1. Find slant height of the conical part.   [1]
2. Determine the floor area of the tent.     [1]
3. 
   
   1. Find area of the cloth used for making tent.     [2]
                          OR
   2. Find total volume of air inside an empty tent.      [2]

In a survey on holidays, 120 people were asked to state which type of transport they used on their last holiday. The following pie chart shows the results of the survey. 

Observe the pie chart and answer the following questions:

1. If one person is selected at random, find the probability that he/she travelled by bus or ship.
2. Which is most favourite mode of transport and how many people used it?
3. 
   
   1. A person is selected at random. If the probability that he did not use train is 4/5, find the number of people who used train.
                                     OR
   2. The probability that randomly selected person used aeroplane is 7/60. Find the revenue collected by air company at the rate of ₹ 5,000 per person.