Question

How many integers in the interval [100, 999] are not divisible by 14?

Answer 1

Answer:

     69

Step-by-step explanation:

Numbers between 100 to 999 which are divided by 13

104,117,130............................988  .

So a=104, d=13 and,an=988  

an=a+(n−1)d  

988=104+(n−1)⋅13  

88413+1=n  

n=69