Question

2,6,10,14,..upto 20 terms

Answer 1

here is your answer

Given,

a= 2. d= 4. n= 20

Then ,formula is=>

an= a +(n-1)d to find nth term of an A.P.

now, According to the question=>

a20 = 2 + 19(4)

=>a20 = 2 + 76


=>a20 = 78.


now, to find sum of nth terms of an A.P, the formula is =>


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

=>S20= 20/2{4+ (19×4)}

=>S20= 10(4+76)


=>S20 = 800



thanks

BE brainly\\\