find the value of n for which nth term of both AP 63,65,67,,,, and 3,10,17,,is equal
Answers
Answered by
4
Answer:
13th term!
Step-by-step explanation:
Let the 1st AP be A =63,65,68.....
Let the 2nd AP be B = 3,7,17......
For A , common difference is : 65-63 = 2
For B ,common difference is : 10-3 = 7
Now Let the nth term be An and Bn respectively.
According to question
An = Bn
=> 63+(n-1)2 = 3+(n-1)7
=>60 + 2n-2 = 7n-7
=>65 = 5n
=> n = 13
Thus 13th term of both AP's will be same!!
Hope it helps!
Answered by
2
61+2n=7n-4
61+4=7n-2n
65=5n
65/5=n
13
Similar questions