When a number 'a' is divided by 6, the remainder is 3 and when another number 'b' is divided by 12, the remainder is 9. What is the remainder when a2 + b2 is divided by 12? Gmat
cherryblossom39:
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a is 18 and b 8s 108 then
a2 and b2 =r=12
18*2 +108*2
36+216
252/12= 21
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