In computing the mean of 8 numbers, a boy mistakenly used 17 instead of 25 as one of the numbers and obtained 20 as the mean. Find the correct mean

Similar Questions

Find the derivative of $3x^{2} + \frac{1}{x^{2}}$...

The probabilities that John and Jane will pass an examination are 0.9 and 0.7 respectively. Find the...

If √5 cosx + √15sinx = 0, for 0° < x < 360°, find the values of x. ...

$Differentiate f (x) = \frac{1}{(1 - x^2)^5}$ with respect to $x$....

The first, second and third terms of an exponential sequence (G.P) are (x - 4), (x + 2), and (3x + 1...

A particle of mass 3kg moving along a straight line under the action of a F N, covers a line distanc...

The gradient of point P on the curve $y = 3x^{2} - x + 3$ is 5. Find the coordinates of P....

Four doctors and two nurses are to sit round a circular table. In how many ways can this be done if ...

A particle starts from rest and moves in a straight line such that its velocity, v, at time t second...

If $\sin\theta = \frac{3}{5}, 0° < \theta < 90°$, evaluate $\cos(180 - \theta)$....