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Maths-

General

Easy

Question

Arithmetic mean of the data
is

n(n+1)/2
(n+1)/2
(2n+1)/3
n(2n+1)/4

The correct answer is: (2n+1)/3

Related Questions to study

Force F on a particle moving in a straight line varies with distance d as shown in the figure. The work done on the particle during its displacement of 12 m

Force F on a particle moving in a straight line varies with distance d as shown in the figure. The work done on the particle during its displacement of 12 m

physics-General

Given below is a graph between a variable force (F) (along y-axis) and the displacement (X) (along $x minus$ axis) of a particle in one axis) of a particle in one dimension. The work done by the force in the displacement interval between 0 m and 30 m is

Given below is a graph between a variable force (F) (along y-axis) and the displacement (X) (along $x minus$ axis) of a particle in one axis) of a particle in one dimension. The work done by the force in the displacement interval between 0 m and 30 m is

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Velocity time graph of a particle of mass 2 kg moving in a straight line is as shown in figure. Work done by all forces on the particle is

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physics-General

parallel

A toy car of mass 4 kg moves up a ramp under the influence of force $F$ plotted against displacement x. The maximum height attained is given (Take $open g equals 10 text end text m divided by s to the power of 2 end exponent close parentheses$

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physics-General

If Wa, Wb, and Wc represent the work done in moving a particle from X to Y along three different path a, b, and c respectively (as shown) in the gravitational field of a point mass m, find the correct relation between Wa, Wb and Wc

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Let $P equals 3 to the power of 1 divided by 3 end exponent times 9 to the power of 1 divided by 9 end exponent times 27 to the power of 1 divided by 27 end exponent horizontal ellipsis horizontal ellipsis infinity$ then $P to the power of 1 divided by 3 end exponent equals$

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Let $a subscript 1 end subscript comma a subscript 2 end subscript horizontal ellipsis.. a subscript 10 end subscript$ be A.P and $h subscript 1 end subscript comma h subscript 2 end subscript horizontal ellipsis h subscript 10 end subscript$ be in H.P If $a subscript 1 end subscript equals h subscript 1 end subscript equals 2$ and $a subscript 10 end subscript equals h subscript 10 end subscript equals 3$ the $a subscript 3 end subscript h subscript 8 end subscript equals$

Let $a subscript 1 end subscript comma a subscript 2 end subscript horizontal ellipsis.. a subscript 10 end subscript$ be A.P and $h subscript 1 end subscript comma h subscript 2 end subscript horizontal ellipsis h subscript 10 end subscript$ be in H.P If $a subscript 1 end subscript equals h subscript 1 end subscript equals 2$ and $a subscript 10 end subscript equals h subscript 10 end subscript equals 3$ the $a subscript 3 end subscript h subscript 8 end subscript equals$

The work done by a force acting on a body is as shown in the graph. what is the total work done in covering an initial distance of 15 m?

The work done by a force acting on a body is as shown in the graph. what is the total work done in covering an initial distance of 15 m?