Question

The sum of series - 8 - 6 - 4 and so on terms is 52 find the number of terms of series in

Answer 1

Answer:

terms is 26

Step-by-step explanation:

                                                              so.......     S 52=   52/2 (a1 - an)

first term = -8                                                     =   52/2 (a1 - a -8)

added each time by -2                                    = 26 ( -8 - (-8))

An= -8+ (n-1) -2                                          S 52     =  26

= -8 -2n +2

= -2n-6

2n= -6

n= -3