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Category: Arithmetic

Question-185270

Question Number 185270 by Mingma last updated on 19/Jan/23 Answered by mr W last updated on 20/Jan/23 2a+1d9a4a02d=10+aa=4:d=72×4+1=9>7rejected$${a}=\mathrm{2}:\:{d}=\mathrm{6}\:\Rightarrow\mathrm{2}×\mathrm{2}+\mathrm{1}=\mathrm{5}\:<\mathrm{6}\:\Rightarrow{ok} \