Divisibility of 7

How many numbers are there 700 to 950 which are not divisible by 3, 7 ?

An integer is chosen between 0 and 100. What is the probability that it is (i) divisible by 7 (ii) not divisible by 7?

Find the numberof integer between 100 and 1000 that are i.divisible by 7 ii.not divisible by 7.

The number of three digit number ( all digits are different ) which are divisible by 7 and also divisible by 7 on reversing the order of the digits, is

Check whether 939715 is divisible by 7.

Check whether 1071 is divisible by 7.

What is the remainder when 4^(1000) , is divisible by 7?