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Nuetrik [128]
4 years ago
15

1+4=5 2+5=12 3+6=21 8+11=

Mathematics
1 answer:
jek_recluse [69]4 years ago
8 0
=12-5=7
=21-12=9
when u look at they have a diffrence of 2 so the answer will have a diffrence of 2 =11
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