A cricketar has a mean score of 58 runs in nine innings. Find out how many runs are to be scored y him in the tenth inning to raie the mean score to 61.

A batsman scored the following number of runs in six innings: 36,35,50,46,60,55 Calculate the mean runs scored by him in an inning:

A cricketer scores the following runs in eight innings: 58, 76, 40, 35, 46, 45, 0, 100. Find the mean score.

A class consists of 50 students out of which 30 are girls, the mean of mark scored by girls in a test is 45 and that of boys is 30. determine the mean score of the whole class.

The scores of a batsman in ten innings are : 55, 34, 48, 38, 70, 44, 54, 46, 63, 42. Find the mean deviation about the median.

Change the following statements using expressions into statements in ordinary language.(For example, given Salim scores r runs in a cricket match, Nalin scores (r+15) runs. In ordinary language – Nalin scores 15 runs more than Salim). Our class has n students.The school has 20 n students.

In One Day International cricket match between India and South Africa played in Kolkata, two Indian batsmen Rahul and Sourav together scored, 185 runs. Express this information in the form of an equation. (Take runs scored by Rahul as x and runs scored by Sourav as y).

Change the following statements using expressions into statements in ordinary language.(For example, given Salim scores r runs in a cricket match, Nalin scores (r+15) runs. In ordinary language – Nalin scores 15 runs more than Salim). Tony puts q marbles on the table.He has 8q marbles in his box.

In a class test (+3) marks are given for every correct answer and (-2) marks are given for every incorrect answer and no marks fornot attempting any question. Mohini scores -5 marks in this test, though she has got 7 correct answers. How many questions has she attempted incorrectly?