1Given a positive integer n, let p(n) be the product of the non-zero digits of n. For example, p(7)=7, p(204)=2×4=8, etc. Let S=p(1)+p(2)+…+p(999). What is the largest prime factor of S?对于正整数n,设p(n)为n的所有非零数字之积.例如:p(7)=7﹑p(204)=2×...
B. 2C. 3D. 9相关知识点: 试题来源: 解析 A Since 3000×30000=90000000, the product has 1 non-zero digit. 3000与30000的乘积中,非0的数是( ). A.1 B.2 C.3 D.9 因为3000×30000=90000000,所以只有1个非0的. 故选A.反馈 收藏
17 Sums of proper divisors with missing digits 52:09 PETER HUMPHRIES_ SMALL SCALE EQUIDISTRIBUTION OF LATTICE POINTS ON THE SPHERE 56:47 TOBIAS FINIS_ WEYL'S LAW WITH REMAINDER TERM AND HECKE OPERATORS 53:38 RIZWANUR KHAN_ NON-VANISHING OF DIRICHLET $L$-FUNCTIONS 1:03:08 ABHISHEK SAHA_ ...
Base b digitsproduct of digitsFor each integer b ≥ 3 and every x ≥ 1, let Nb,0(x) be the set of positive integers n ≤ x which are divisible by the product of their nonzero base b digits. We prove bounds of the form xρb,0+o(1) < #Nb,0(x) < xηb,0+o(1), as ...
long division 长除法 arithmetical division in which the divisor has two or more figures, and a series of steps is made as successive groups of digits of the dividend are divided by the divisor, to avoid excessive mental calculation. short division 短除法 arithmetical division in which the quoti...
LI4278 PRODUCT REFERENCE GUIDE LI4278 PRODUCT REFERENCE GUIDE 72E-151834-12 Revision A April 2023 ii LI4278 PRODUCT REFERENCE GUIDE No part of this publication may be reproduced or used in any form, or by any electrical or mechanical means, without permission in writing. This includes electronic...
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1.2 Operator Interface Figure 1-1 UDC3500 Operator Interface 6 UDC3500 Universal Digital Controller Product Manual 3/07 Introduction 1.2.1 Function of Displays and Keys Table 1-1 Function of Displays and Keys 32500 SP 33250000 ALM Display Indicators Upper display with 4 larger digits shows Process...
The "b" designation is only used in situations where confusion as to the type of the number might arise. Base 10 numbers are represented by the length of the field in bits, the character "d", and a string of decimal digits (for example, 3'd6). The "d" designation is only used...
If the average (arithmetic mean) of 5 positive temperatures is 32 degrees Fahrenheit, then the sum of the 3 greatest of these temperatures, in degrees Fahrenheit, could be ?() A.A B.B C.C D.D E.E 单项选择题 Any decimal that has only a finite number of nonzero digits is a termina...