注目の話題: おばさんイジリされる職場; 妻の過去について; 皆さんは精神科受診についてどう思いますか？

Science,English,and math 4th

No.379　21/04/21 20:30
燻し銀三 ( 60代 ♂ IJ7P0b ) あ+あ-

【Do you know an almighty pair of scales?】

《An question in which a sense of mathematics is necessary for us》

The question is relation to the pair of scales.

When using the pair of scales, and wanting to measure from 1 gram to 40 gram one by one gram, how many weight do we need at least? And how much is each of the weight?

If the one who is get used to it, it will answer we need six kinds of weight. 1 gram, 2 gram, 4 gram, 8 gram, and 16 gram.

If making use of the six kinds of weight, we can measure all the weight from 1 gram to 40 gram. All the weight is expressed with 2 to nth power.

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