How many positive whole numbers less than 81 are NOT equal squares of whole numb

游客2025-02-24 38

问题 How many positive whole numbers less than 81 are NOT equal squares of whole numbers?

选项 A、9
B、70
C、71
D、72
E、73

答案 D

解析小于81且不等于整数的平方(square)的正整数(positive whole numbers)有多少个?
解：本题的正确答案是(D)。该题也就是问小于81的非完全平方数有多少个。小于81的完全平方数有1，4，9，16，25，36，49，64共8个，而小于81的正整数有80个，所以小于81的非完全平方数有80-8=72个。

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How many positive whole numbers less than 81 are NOT equal squares of whole numb

TheproductoftwoconsecutivepositiveintegersCANNOTbeA、aprimenumberB、div

Howmanypositiveintegerslessthan20areequaltothesumofapositivemulti

Theaverage(arithmeticmean)of3differentpositiveintegersisequaltothe

Ifn=pqr,wherep,q,andrarethreedifferentpositiveprimenumbers,howma

Whichofthefollowingnumbersisbothafactorof48andamultipleof6?A、2B

[img]ct_2image002[/img]Thesumofeachpairofnumbersindiametricallyopposit

WhichofthefollowingnumbersisNOTthesumofthreeconsecutiveoddintegers?

AK-numberisapositiveintegerwiththespecialpropertythat3timesitsunit

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A将1改写为，分子1、4、9、16、25、（36)是平方数列，分母2、4、7,11、16、（22)是二级等差数列，所填分数为

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