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If p>q>w>r and p-q>m (m>0), p and q are odd integers, w, r and m are even intege
If p>q>w>r and p-q>m (m>0), p and q are odd integers, w, r and m are even intege
游客
2025-02-27
25
管理
问题
If p>q>w>r and p-q>m (m>0), p and q are odd integers, w, r and m are even integers, then the least possible value of(p-r)is?
选项
A、m+3
B、m+4
C、m+5
D、m+6
E、m+7
答案
C
解析
这是一道较难的考查整数奇偶性的题目。由于p>g>w>r,因此p-r=(p-g)+(q-w)+(w-r),也就是说,只要首先求出相邻两个数的最小差值就可以。w和r都是偶数,并且w>r,那么w-r的最小值为2;(两个连续偶数之差为2)q为奇数,w是偶数,并且q>w,那么q-w的最小值为1;(两个连续整数之差为1),p和g都是奇数,p-g>m,那么p-q的最小值为m+2;因此p-r的最小值为(m+2)+2+1=m+5,选择C。
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