09:12

Consider the structure of the three cyclic carbon compounds A, B and C given below and select the

28:21

A copper wire, 3 mm in diameter, is wound about a cylinder whose length is 12 cm, and diameter 10

13:29

The radius of sphere is 5 cm. If the radius is increased by 20%. Then how much percentage increase

10:40

Find the ratio in which the line x-3y=0 divides the line segment joining the points (-2,-5) and (6,3

06:47

The line segment joining the points A(2,1) and B(5,-8) is trisected at the points P and Q such that

07:36

Find the ratio in which the y-axis divides the line segment joining the points (6,-4) and (-2,-7)

04:09

If the mid-point of the line segment joining the points A(3,4) and B(k,6) is P(x,y) and x+y-10=0,

05:49

If the points C(-1,2) divides internally the segment joining A(2,5) and B(x,y) in the ratio 3:4,

05:39

In parallelogram ABCD, A(3,1), B(5,1), C(a,b) and D(4,3) are the vertices. Find vertex C(a,b).

04:25

P(-2,5) and Q(3,2) are two points. Find the co-ordinates of the point R on PQ such that PR=2QR.

06:07

Find the point on x-aixs which is equidistance from the points (2,-2) and (-4,2).

07:09

The distance between point A(5,-3) and B(13,m) is 10 units. Calculate the value of m.

02:06

Find the co-ordinates of a point A, where AB is diameter of a circle whose centre is (2,-3) and B

04:11

In which quadrant lies the point which divides the line segment joining the points (8,-9) and (2,3)

12:06

Parth was receiving spam calls from a telemarketing centre. He got the first call at 2:48 pm as show

13:08

Two arithmetic progression have the same first term. The common difference of one progression is

05:33

Sana decided to start practicing for an upcoming marathon. She decided to gradually increase the

06:33

Huner said, "The value of the 20ᵗʰ term of ANY arithmetic progression is double that of the 10ᵗʰ

06:42

14, 21, 28, 35, ... and 26, 39, 52, 65, ... are two arithmetic progression such that the pᵗʰ term

13:06

Animation is a method in which a sequence of images are manipulated to appear as moving objects

04:31

Shivam bought a large quantity of marigold flowers to decorate his house for a family function.

03:02

Consider the list of numbers below. 1/2 + k, 2/3 + k, 3/4 + k, 4/5 + k,... where k is an integer.

02:58

√2, √18, √50, √98, .... Is the above pattern in A.P. ? Justify your answer.

16:19

The school auditorium was to be constructed to accommodate at least 1500 people. The chairs are

09:49

Your elder brother wants to buy a car and plants to take loan from a bank for his car. He repays his

08:52

Your friend Veer wants to participate in a 200 m race. He can currently run that distance in 51

05:45

4 groups in a class were asked to come up with an arithmetic progression (AP). Show below are their

03:36

Which of the following is not an A.P. ? A) -1.2, 0.8, 2.8,... B) 3, 3+√2, 3+2√2, 3+3√2,...

03:00

The nᵗʰ term of the A.P. a, 3a, 5a, .... is :

02:20

The common difference of the A.P. 1/p, 1-p/p, 1-2p/p, ..... is :

02:30

The value of x for which 2x, (x+10) and (3x+2) are the three consecutive terms of an A.P. is :

00:38

The first term of an A.P. is p and the common difference is q, then its 10ᵗʰ term is :

04:28

Find the sum of all 11 terms of an A.P. whose middle term is 30.

05:24

The first term of an A.P. is 3, the last term is 83 and the sum of all its terms is 903. Find the

03:20

In an A.P. given that the first term (a) = 54, the common difference (d) = -3 and the nᵗʰ term (aₙ)

09:52

In an A.P., the sum of first n terms is n/2(3n+5). Find the 25ᵗʰ term of the A.P.

14:06

If the last term of an A.P. of 30 terms is 119 and the 8ᵗʰ term from the end (towards the first term

07:21

If the sum of first four terms of an A.P. is 40 and that of first 14 terms is 280. Find the sum of

02:28

If the first term of an A.P. is 5, the last term is 15 and the sum of first n terms is 30, then find

06:51

How many terms of the A.P. -6, -11/2, -5, -9/2.... are needed to give their sum zero.

03:44

Find the sum of first 20 terms of an A.P. whose nᵗʰ term is given as aₙ = 5-2n.

10:40

The sum of the first 7 terms of an A.P. is 63 and that of its next 7 terms is 161. Find the A.P.

11:00

If Sₙ the sum of first n terms of an A.P. is given by Sₙ = 3n² - 4n. Find the nᵗʰ term.

02:55

If nᵗʰ term of an A.P. is (2n+1), what is the sum of its first three terms ?

01:47

Find the sum of the first 10 multiples of 6.

04:19

If the 10th term of an A.P. is 52 and the 17th term is 20 more than the 13th term, find A.P.

10:27

The sum of the first three terms of an A.P. is 33. If the product of first and third term exceeds

06:29

Find the middle term of the A.P. 7, 13, 19, .... , 247.

15:44

Which term of the A.P. 20, 19 whole 1/4, 18 whole 1/2, 17 whole 3/4, .... is the first negative term

10:35

How many natural numbers are there between 1 and 1000 which are divisible by 5 but not by 2 ?

08:46

Read the given passage and answer the questions that follow : The pictures show the bonds formed by

02:14

Assertion (A) : Acetic acid has six single bond and one double bond. Reason (R) : It is saturated

08:06

Activity 12.4 Class 10 Magnetic Effect of Electric Current | Take a long straight copper wire, two

17:16

If m times the mᵗʰ term is equal to n times the nᵗʰ term of an A.P. prove that (m+n)ᵗʰ term of A.P.

17:10

If PAB is a secant to a circle of centre O intersecting the circle of A and B and PT is tangent

11:01

A student is given equal amount of three samples of water with temporary hardness labelled as 'A',

03:19

Find a and b so that the numbers a, 7, b, 23 are in A.P.

04:01

Which term of the A.P. -11/2, -3, -1/2, ..... is 49/2 ?

03:48

Find the 20th term from the last term of the A.P. : 3, 8, 13, ...... 253.

02:14

For what value of k will k+9, 2k-1 and 2k+7 are the consecutive terms of an A.P. ?