Q57
Two A.P.’s have the same common difference. The first term of one of these is 8 and that of the other is 3. The difference between their 30th terms is
A.
11
B.
3
C.
8
D.
5
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
In two A.P.’s common-difference is sameLet A and a are two A.P. ’s
First term of A is 8 and first term of a is 3
A30 – a30 = 8 + (30 – 1) d – 3 – (30 – 1) d
= 5 + 29d – 29d
= 5