Question

Sum of the series 2+5+8+…..+182 is​

Answer 1

Answer:

n(n+1)/2

n=182

then 182(182+1)/2

182×183/2

33306/2

=16653 check it once a time

Answer 2

a+( n-1 )d

182 = 2 + ( n-1 ) 3

182 - 2 = ( n-1 )3

180/3 = n-1

60+1 = n

n= 61

Sn= n/2 (2a+{n-1}d)

Sn= 61/2 ( 2+182 )

Sn= 61/2 ( 184 )

Sn= 61 * 92

Sn= 5612