IOS olympiad 2019-2020 Answer key class 3
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Explanation:
>01 A >11 A >21 D >31 B 41 B
>02 C >12 D >22 C >32 B 42 C
>03 D >13 D >23 A >33 C 43 *
>04 A >14 B >24 A >34 D 44 C
>05 C >15 B >25 C >35 A 45 D
>06 D >16 A >26 C >36 D 46 A
>07 A >17 A >27 C >37 A 47 D
>08 D >18 A >28 B >38 B 48 D
>09 D >19 C >29 C >39 C 49 D
>10 D >20 C >30 A >40 A 50
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