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How would you find the sum of the first 50 even numbers?
Sum of 1st n even numbers: count*average = n * (2 + 2*n)/2 = n * (n+1) Sum = 50 * (2+100)/2 = 50*51 = 2550
What is halfway between 30 and 70?
The halfway point between two numbers is found by taking the average of the two numbers. In this case, the average of 30 and 70 is (30 + 70) / 2 = 100 / 2 = 50. Therefore, 50 is halfway between 30 and 70.
The sum of 5 numbers is 200 what is the average of the numbers?
The average of five numbers whose sum is 200 will always be 40, no matter which numbers you choose. When finding an average, you add up the numbers (find the sum of the set), then divide by the number of terms. In this case, the sum will always be 200, and there will always be five terms. This will always result in an average of 40. Ex/ 1 + 2 + 3 + 4 + 190 = 200 200 / 5 = 40 40 + 40 + 80 + 24 + 16 = 200 200 / 5 = 40
What is halfway between 10 and 90?
The halfway point between two numbers is found by taking the average of the two numbers. In this case, the average of 10 and 90 is (10 + 90) / 2 = 50. Therefore, the number halfway between 10 and 90 is 50.
If the average of 5 numbers is 50 what is their sum?
250
