Question

6. Without adding, find the sum. (i) 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15.please show step by step .​

Answer 1

Answer:

your answer is 64

Step-by-step explanation:

Answer 2

Answer:

64

Step-by-step explanation:

To find the sum of first n odd numbers we can apply odd number theorem, It states that the sum of first n odd numbers is equal to the square of n.

If we apply odd number theorem:

Sum of first 10 odd numbers = n * n = 10 * 10 = 100

So the sum of 8 consecutive odd numbers = 8×8=64.

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