JEE Main 2025 Mathematics question
Let be the nth term of an A.P. If , and , then is equal to :
Answer: (2)
Solution
From a+5d=7 and a+3d=1, d=3, a=-8. Solving gives n=25, so .
Let be the nth term of an A.P. If , and , then is equal to :
From a+5d=7 and a+3d=1, d=3, a=-8. Solving gives n=25, so .