Advertisements
Advertisements
प्रश्न
The average of two numbers are 20. One number is 24, another number is ____________
विकल्प
16
26
20
40
Advertisements
उत्तर
16
Explanation;
Hint:
`(x + y)/2` = 20
x + y = 40
24 + y = 40
y = 40 – 24
= 16
APPEARS IN
संबंधित प्रश्न
Solve any two of the following.
In some families in a colony the daily purchase of milk in litre is 1, 3, 2, 2, 4, 1, 2, 2, 1. Find the mean, median and mode of daily purchase of milk.
The number of Science and Mathematics projects submitted by Model high school, Nandpur in last 20 years at the state level science exibition is:
2, 3, 4, 1, 2, 3, 1, 5, 4, 2, 3, 1, 3, 5, 4, 3, 2, 2, 3, 2. Prepare a frequency table and find the mean of the data.
The mean weight of 4 members of a family is 60 kg. Three of them have the weight 56 kg, 68 kg and 72 kg respectively. Find the weight of the fourth member
The mean of a set of seven numbers is 81. If one of the numbers is discarded, the mean of the remaining numbers is 78. The value of discarded number is
The algebraic sum of the deviations of a set of n values from their mean is
The mean of a, b, c, d and e is 28. If the mean of a, c and e is 24, then mean of b and d is
If the average selling price of 15 books is ₹ 235, then the total selling price is __________
The average of integers between −10 to 10 is __________
Find the mean of the first ten even natural numbers.
The mean age of 25 teachers in a school is 40 years. A teacher retires at the age of 60 years and a new teacher is appointed in his place. If the mean age of the teachers in this school now is 39 years, then the age (in years) of the newly appointed teacher is ______.
