Question: Solve this using python Brian has recently started teaching dance. Today, he will be teaching Ballet. For this, he needs to divide the people attending his dance class into pairs. Usually in Ballet, the dance pairs consist of one girl and one boy. But Brian doesn't find this convention very interesting. He is rather more concerned about the IQ of people who are members of the same pair. Precisely, if the sums of digits of the IQ score of the two people forming a pair are co-prime, then the pair willIl be awkward according to Brian. For example, IQ scores 12 (1+2=3) and 22 (2+2=4) form an awkward pair. The IQ scores of all the people attending the Ballet class are pairwise distinct. The lowest IQ is L and the largest IQ is R. Moreover, there are exactly R-L+1 people attending the Ballet class. Brian wants to know the number of ways in which an awkward pair can be formed modulo 109+7. Sample Input: 1 15 27 Sample Output: 46

Question: Solve this using python Brian has recently started teaching dance. Today, he will be teaching Ballet. For this, he needs to divide the people attending his dance class into pairs. Usually in Ballet, the dance pairs consist of one girl and one boy. But Brian doesn't find this convention very interesting. He is rather more concerned about the IQ of people who are members of the same pair. Precisely, if the sums of digits of the IQ score of the two people forming a pair are co-prime, then the pair willIl be awkward according to Brian. For example, IQ scores 12 (1+2=3) and 22 (2+2=4) form an awkward pair. The IQ scores of all the people attending the Ballet class are pairwise distinct. The lowest IQ is L and the largest IQ is R. Moreover, there are exactly R-L+1 people attending the Ballet class. Brian wants to know the number of ways in which an awkward pair can be formed modulo 109+7. Sample Input: 1 15 27 Sample Output: 46

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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