Two APs have the same common difference. The difference between their 100th terms is 100, what is the difference between their 1000th terms?

How many three-digit numbers are divisible by 7?

For what value of n, are the nth terms of two APs: 63, 65, 67, ….. and 3, 10, 17, …….. equal?

Determine the AP whose third term is 16 and the 7th term exceeds the 5th term by 12.