201, 208, 215, .....? upto 25th term
(A) 360
(B) 367
(C) 369
(D) 370
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Answer:
Hey mate☺
Explanation:
Your upcoming term:-
201, 208 , 125 , _____???
⚫Noticing the differences or relations between all the terms!!
201+(7) = 208
208+(7)= 215
215+(7)= 222
t(1)= 201
t(2)= 208
t(3)= 215
t(25)= ??
t(25)=
⚫The above equation is an arithmetic progression with simple difference.
d= 208-201 = 215-208= 7
➡First term = a= 201
The sum of first an numbers of an AP with term a a & d :-
➡Sn= n/2{2a-(n+1)d}
⚫Hence sum of first n numbers= 25 terms of an AP with term 201 and d = 7:-
➡S25= 25/2{2×201-(25-1)×7}
➡S25 = 33075
Therefore required term is
➡➡33075⬅⬅
❤Hope it helpz❤
▶▶Mark brainliest◀◀
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