What is the sum of all the odd numbers from 1 to 49?
Answer and explanation
Correct answer: B. 625
- Step 1: There are 25 odd numbers from 1 to 49. Step 2. The sum of the first n odd numbers is n², so the sum is 25² = 625. Answer: 625. Why not the others: 576: This is 24², which uses 24 odd numbers instead of 25. 1,225: This is the sum of all the whole numbers from 1 to 49. 676: This is 26², which uses 26 odd numbers instead of 25.
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