l Sum of all integers from 60 to 90 inclusive

Enter start number

Enter ending number

    

Answer
2325

↓Steps Explained:↓



What is the sum of all integers from:

60 to 90 inclusive?

Inclusive Sum Formula

Inclusive Sum = n/2(f + l)
where f is the first number and l is the last number and
n is l - f + 1

Calculate Inclusive Sum

n = 90 - 60 + 1

n = 31

15.5(150)

Final Answer

2325

Related Calculators:  Consecutive Integer Word Problems  |  2 number Word Problems  |  Sum of the First (n) Numbers
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