The fourth term of an A.P is three times of the first term and the seventh term exceeds the twice of the third term by one, then the common difference of the progression is
see full answer
Your Exam Success, Personally Taken Care Of
1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya
a
2
b
3
c
32
d
–1
answer is A.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
Let the progression be a,a+d,a+2d .... given that t4=3t1⇒a+3d=3a⇒3d=2a→(i)Again t7=2t3+1 ⇒a+6d=2(a+2d)+1⇒2d=a+1→(ii)Solving (i) and (ii), then we get a= 3, d= 2