Question

How many positive integers less than 1000 (a) are divisible by 7? justify your answer?

Answer 1

142. 

You can get this by seeing what number you have to multiply 7 by to get as close to 1000 as you can. 7*142 = 994. Thus each one of the multiplications up to that point will give you a positive integer than can be divided by 7. <span />