find the largest no. which divides 245 and 1245 leaving remainder 5 in each case.

Question

find the largest no. which divides  245 and 1245 leaving remainder 5 in each case.

anonymous · Answer

plz help

anonymous · Answer

working on it :) i just want to make sure i know how to solve it before I give you an answer

anonymous · Answer

i knw ans but dont knw how 2 do it.........will u plz give working
ans is 40

anonymous · Answer

yeah gimme a sec to do the work

anonymous · Answer

oh tell me how 2 do this type of quetions in exam

anonymous · Answer

ok well first of all, you have to leave a remainder of five in each case, so subtract five from each number, getting 240 and 1240. does that make sense?

anonymous · Answer

ok then wat 2 do?

anonymous · Answer

then you want to get the prime factorization of of those two numbers
so for 240: |dw:1339614922053:dw|
and for 1240: |dw:1339614990230:dw|