Question

give the total sum of odd numbers from 1 to 119​

Answer 1

an = 119

d = 2

a = 1

n = ?

an = a + (n - 1)d

119 = 1 + (n - 1)2

119 = 1 + 2n - 2

118 = 2n - 2

120 = 2n

n = 120/2

n = 60

Sn = n/2 (a + an)

Sn = 60/2 ( 1 + 119)

Sn = 30 × 120

Sn = 3600

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Answer 2

8hi mate your answer

the sum of the odd numbers from 1 to 119 is 12100

the answer is detailed given in the picture

hope that it will help you