What is the average of all numbers between 100 and 200 which are divisible by 13?
There are 8 numbers present between 100 and 200 that are divisible by 13 ,and those are : 104,117,...,182,195.
So,total of them=(8/2)(104+195)=1196.
So, average of them=1196/8=149.5.
D is correct choice.
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