Arithmetic

Central Tendency

Easy

The average of first six multiples of 11 is :

37.5

38.5

39.5

✅ Correct Option: 3

First six multiples of 11 are 11, 22, 33, 44, 55, 66. Sum $=11(1+2+3+4+5+6)=11\times 21=231$ . Average $=\frac{231}{6}=38.5$ .

2026: 19 May Shift 2

The following table shows the ages of the patients admitted in a hospital during a year:

Age (in year)	5-15	15-25	25-35	35-45	45-55	55-65
Number of patients	6	11	19	23	14	7

Find the mean of the above data.

2025: 14 May Shift 2

Find out the median of the following frequency distribution:

Variable	11	12	13	14	15	16	17	18	Total
Frequency	5	7	11	9	8	7	3	5	55

2022: 23 Aug Shift 1

The average of the four consecutive odd numbers is 16. What is the third number in the descending order?

2022: 26 Aug Shift 1

The average of the four consecutive odd number is 16. What is the difference between third and first number?

2025: 27 May Shift 2

The average of nine numbers is 50. The average of the first five numbers is 54 and the average of the last three numbers is 52. Find the sixth number of this set of numbers?

2023: 15 June Shift 2

If the mean of 5 observations $x$ , $x + 2$ , $x + 4$ , $x + 6$ and $x + 8$ is 11, then value of $x$ :

The average of first six multiples of 11 is :

Solution

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