2015 · Q50
Consider all positive two digit numbers each of which when divided by 7 leaves a remainder 3. What is their sum ?
Elementary MathematicsMensuration
- A661
- B666
- C676
- D777
Explanation
The numbers 10, 17, ..., 94 form an AP of 13 terms with sum 13 x (10 + 94)/2 = 676. Hence option (c).