Question

Find the sum of first 7odd number s

Answer 1

Answer:

Address the formula, input parameters & values.

Input parameters & values:

The number series 1, 3, 5, 7, 9, .  .  .  .  , 13.

The first term a = 1

The common difference d = 2

Total number of terms n = 7

step 2 apply the input parameter values in the AP formula

Sum = n/2 x (a + Tn)

= 7/2 x (1 + 13)

= (7 x 14)/ 2

= 98/2

1 + 3 + 5 + 7 + 9 + .  .  .  .   + 13 = 49

Therefore, 49 is the sum of first 7 odd number

Step-by-step explanation:

Answer 2

Answer:

69

Step-by-step explanation:

HERE IS YOUR ANSWER

7 FIRST ODD NUMBERS = 3+5+7+9+11+13+15

=63

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