১ থেকে ৪৯ ক্রমিক সংখ্যাগুলোর গড় কত?

১ থেকে ৪৯ ক্রমিক সংখ্যাগুলোর গড় কত? ?

Created: 1 year ago | Updated: 2 months ago | Created By:

Md Kamal Uddin

২৩

২৫

২৬

২৭

0 17

Institution: জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় (JKKNIU) Exam: গ ইউনিট || জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় || 2013
Topic: Arithmetic Mathematics (পাটিগণিত), Subject: Mathematics (সাধারণ গণিত)

Best Answer Explained in Below-:

To find the average (গড়) of the sequential numbers from 1 to 49, we can follow a straightforward calculation method applicable to any set of consecutive numbers.

The formula for the average is:
\[
\text{Average} = \frac{\text{Sum of all numbers}}{\text{Total number of numbers}}
\]

First, we determine the total number of numbers from 1 to 49, which is simply 49.

Next, we calculate the sum of these numbers. For a series of consecutive integers, the formula for the sum can be given by:
\[
\text{Sum} = \frac{n(n + 1)}{2}
\]
where \( n \) is the last number in the series. For our case:
\[
\text{Sum} = \frac{49 \times (49 + 1)}{2} = \frac{49 \times 50}{2} = 1225
\]

Now, we can substitute these values into our average formula:
\[
\text{Average} = \frac{1225}{49} = 25
\]

Therefore, the average (গড়) of the numbers from 1 to 49 is 25. This aligns with option B, confirming that 25 is indeed the correct choice.

No comments yet.

A man can reach a certain place in 40 hours . If he reduces his speed by 1/15th, he goes 5 km less in that time . Find the total distance covered by him.

An employer pays 3 workers X, Y and Z a total of Tk. 610 a week. X is paid 125% of the amount Y is paid and 80% of amount Z is paid. How much does X make a week?