Hello.
Please answer those if you may:
1) In how many ways can 2310 be expressed as a difference of 2 squares?
2) What is the sum of all irreducible factors between 10 and 20 with denominator as 3?
3) When a number is divided by 11,7,4 the remainders are 5,6,3 respectively.
What would be the remainders when the same number is divided by 4,7,11,respectively?
thanx
kostas