试题来源: 解析 C 正确答案:C解析:The non-prime numbers between 40 and 50 are 42, 44, 45, 46, 48, and 49. (Remember, the non-inclusive means we don’t include the 40 and 50.) Add them all up and we get 274.反馈 收藏
The sum of the non-prime numbers between 40 and 50, non-inclusive, is A.131 B.176 C.274 D.405 E.495 查看答案
On prime numbers, for which (almost) all fermat numbers are quadratic non-residuesIt is well known that 3, 5, 7 are such primes. But in higher regions they appear only very rare. There exist many residue classes without such primes. Also other conditions for their existence are given. ...
Non-congruent numbers with arbitrarily many prime factors congruent to $3$ modulo $8$ 来自 dx.doi.org 喜欢 0 阅读量: 63 作者: B Iskra 摘要: The author proves that if p 1 ,,p are distinct primes satisfying p i ≡3(mod8) and (p j /p i )=-1, j...
Long noncoding RNAs (lncRNAs) are linked to cancer via pathogenic changes in their expression levels. Yet, it remains unclear whether lncRNAs can also impact tumour cell fitness via function-altering somatic “driver” mutations. To search for such drive
Recently, higher-order topological insulators (HOTIs) have been introduced, and were shown to host topological corner states under the theoretical framework of Benalcazar-Bernevig-Hughes. Here we unveil some topological effects in HOTIs by studying the t
1 cells with control sEVs had a significant impact on EMT markers, too, suggesting an overdose of sEVs. While this does not contradict an oncogenic role of lncRNA-HULC per se, it remains uncertain if physiological numbers of sEVs carry sufficient amounts of lncRNA-HULC to induce the ...
2,868 of the cSNPs were predicted to be non-synonymous. A subset of the non-synonymous SNPs was genotyped through pools containing DNA from a number of cattle of different breeds and 29% of these SNPs were confirmed to be polymorphic in the animals tested (minor allele frequency >10%). ...
In contrast to this common expectation, here we report an anomalous anisotropy of spin current can emerge in the (001) film of Mn3Pt, a noncollinear antiferromagnetic spin source with face-centered cubic structure. Such spin current anisotropy originates from the intertwined time reversal-odd ({...
to Hebbian learning of multiple memories in Hopfield neural networks17,23(Extended Data Fig.1). Furthermore, the use of interaction-mediating tiles avoids constraints from Watson–Crick complementarity, allowing almost arbitrary interactions to be engineered between S tiles. To avoid undesired ...