Question

For what value of x are the n terms of two ap 63 65 67 and 3 10 17 are equal

Answer 1

Step-by-step explanation:

nth term = a + (n - 1)d

1st series 63, 65, 67.........

63 + (n - 1)2

63 + 2n - 2

61 + 2n

2nd series 3, 10, 17 ........

3 + (n - 1)7

3 + 7n - 7

7n - 4

nth term equal

7n - 4 = 2n + 61

7n - 2n = 61 + 4

5n = 65

n = 65/5 = 13

13th term is equal