Question in the pic! Pls It's readable!: Q and arithmetic progression has an even number - Maths - Arithmetic Progressions

Question

Question in the pic! Pls It's readable!:

Q and arithmetic progression has an even number of terms The sum of
the terms at odd places is 440 and the sum of the terms at even
place is 520 THe last term is 156 more than the first term

A) 20
B) 30
C) 40
D) 60

Brijendra Pal · Accepted Answer

Hi, Let total 2n terms A T
Q, T1+T3+T5+ T2n-1= 440T2+T4+T6+
T2n=520subtract equation 2 -1  d+d+d
n times = 80  Since T2-T1= T4-T3= 
= dnd = 80 
1T2n= a+156a+2n-1d= a+156 2nd-d = 156 160-d = 156 using equation 1 d  = 4 so n = 804= 20

Question in the pic! Pls... It's readable!: Q. and arithmetic progression has an even number of terms. The sum of the terms at odd places is 440 and the sum of the terms at even place is 520. THe last term is 156 more than the first term. A) 20 B) 30 C) 40 D) 60

Question in the pic! Pls... It's readable!:

Q. and arithmetic progression has an even number of terms. The sum of the terms at odd places is 440 and the sum of the terms at even place is 520. THe last term is 156 more than the first term.

A) 20
B) 30
C) 40
D) 60