An algebra problem by Retam roy
Algebra
Level
pending
There are 81 cows. The first cow gives 1 litre milk, the second cow 2 litre and respectively the 81th cow gives 81 litres milk. Now how I will arrange the cows in rows of 9 cows so that each row has equal litres of milk in total
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1 solution
.............................Cow Number.......... - Cow No. 1 ... 1 11 21 31 41 51 61 71 81 - Cow No. 2 ... 2 12 22 32 42 52 62 72 73 - Cow No. 3 ... 3 13 23 33 43 53 63 64 74 - Cow No. 4 ... 4 14 24 34 44 54 55 65 75 - Cow No. 5 ... 5 15 25 35 45 46 56 66 76 - Cow No. 6 ... 6 16 26 36 37 47 57 67 77 - Cow No. 7 ... 7 17 27 28 38 48 58 58 78 - Cow No. 8 ... 8 18 19 29 39 49 59 69 79 - Cow No. 9 ... 9 10 20 30 40 50 60 70 60