Explanation:

The two digit number which gives a remainder of 3 when divided by 7 are:
10, 17, 24 ..... 94.
Now, these number are in AP series with 
1st Term, a = 10; 
Number of Terms, n = 13;
Last term, L = 94 and
Common Difference, d = 7.
= {n*(a+L)/2}
= 13*52 = 676

Hence, option 2 is the correct answer.