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Q241

The sum of the three consecutive even numbers is 44 more than the average of these numbers. Which of the following is the third largest of these numbers?

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Q242

The average of five consecutive odd numbers is 95. What is the fourth number in the descending order?

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Q243

The average of two numbers is 6.5 and square root of their product is 6. What are the numbers?

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Q244

A, B, C and D are four consecutive even numbers respectively and their average is 65. What is the product of A and D?

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Q245

The arithmetic mean of the series 1, 2, 4, 8, 16, . . . . . . , 2ⁿ is -

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Q246

The following table shows the number of working hours and the number of employees employed in a small scale industry

No. of working hours	No. of employees
3 - 5	7
5 - 7	10
7 - 9	18
9 - 11	57
11 - 13	14
13 - 15	8

The average number of working hours of an employee is

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Q247

In Arun’s opinion, his weight is greater than 65 kg but less than 72 kg. His brother does not agree with Arun and he thinks that Arun’s weight is greater is that 60 kg but less than 70 kg. His mother’s view is that his weight cannot be greater than 68 kg. If all of them are correct in their estimation, what is the average of different probable weights of Arun?

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Q248

The mean of the first ten even natural number is-

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Q249

The average of the first nine prime numbers is-

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Q250

The arithmetic mean of first 11 natural numbers is

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Q251

The total marks obtained by a student in Physics, Chemistry and Mathematics together is 120 more than the marks obtained by him in Chemistry. What is the average marks obtained by him in Physics and Mathematics together?

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Q252

A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and x. He found mean to be 12. What should be the number in place of x?

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Q253

If the mean of a, b, c, is M and ab + bc + ca = 0, then the mean of a², b², c² is -

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Q254

The average of 2, 7, 6 and x is 5 and the average of 18, 1, 6, x and y is 10. What is the value of y?

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Q255

The average of x₁, x₂, x₃ and x₄ is 16. Half the sum of x₂, x₃, x₄ is 23. What is the value of x₁?

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Q256

Company C sells a line of 25 products with an average retail price of Rs. 1200. If none of these products sells for less than Rs. 420 and exactly 10 of the products sell for less than Rs. 1000, then what is the greatest possible selling price of the most expensive product?

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Q257

If the mean of 5 observations x, x + 2, x + 4, x + 6 and x + 8 is 11, then the mean of the last three observations is-

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Q258

The mean of 1², 2², 3², 4², 5², 6², 7² is -

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Q259

Total of Arun’s marks in Sanskrit and Mathematics together are 80 more than his marks in Science. His average marks in the three subjects are 100. What are his marks in Science?

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Q260

If a, b, c, d, e are five consecutive odd numbers, their average is

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