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64.A person wrote 15 numbers on a circle. Each number was the arithmetic mean of its two neighbours. If one of these numbers was 6, then the sum of all the numbers written on the circle is (1) 120 (2) 189 (3) 100 (4) 90 |
| Answer» 64.A person wrote 15 numbers on a circle. Each number was the arithmetic mean of its two neighbours. If one of these numbers was 6, then the sum of all the numbers written on the circle is (1) 120 (2) 189 (3) 100 (4) 90 | |