Question

what is the sum of first 30 whole numbers​

Answer 1

Answer:

930

Step-by-step explanation:

Address the formula, input parameters & values.

Input parameters & values:

The number series 2, 4, 6, 8, 10, 12, .  .  .  .  , 60.

The first term a = 2

The common difference d = 2

Total number of terms n = 30

apply the input parameter values in the AP formula

Sum = n/2 x (a + Tn)

= 30/2 x (2 + 60)

= (30 x 62)/ 2

= 1860/2

2 + 4 + 6 + 8 + 10 + 12 + .  .  .  .   + 60 = 930

Therefore, 930 is the sum of first 30 even numbers.

Answer 2

$\huge{\textbf{\textsf{\pink{Answer\::}}}}$

♨️ Sn = n/2 (2a + (n - 1)d)

→ Sn = 30/2 [(2 × 1) + (30 - 1) 1]

→ Sn = 15 [2 + 29]

→ Sn = 15 × 31

→ Sn = 465