Question

the sum of 1st 15 even numbers​

Answer 1

Answer:

240

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

STEP1:Address the formula, input parameters & values.

Input parameters & values:

The number series 2, 4, 6, 8, 10, 12, . . . . , 30.

The first term a = 2

The common difference d = 2

Total number of terms n = 15

STEP2:apply the input parameter values in the AP formula

Sum = n/2 x (a + Tn)

= 15/2 x (2 + 30)

= (15 x 32)/ 2

= 480/2

2 + 4 + 6 + 8 + 10 + 12 + . . . . + 30 = 240

Therefore, 240 is the sum of first 15 even numbers.

Hope!! IT WILL HELP YOU.