close
標題:
發問:
If n and p are integer greater than 1 and if p is a factor of both n+3 and n+10, what is the value of p?
最佳解答:
p is a factor of n+3 => n+3 = p*A for some integer constant A ... (1) p is a factor of n+10 => n+10 = p*B for some integer constant B ... (2) Equation (2) minus equation (1) gives 7 = p * (B-A) = p*C for some integer constant C = B-A So p should also be a factor of 7. Since 7 only has two factors, 1 and 7, and p cannot be 1 as said in the question, p = 7.
其他解答:
- 什麼是市營率(P.E.)-@1@
- Why C6H5O- is a stronger nucleophile than CH3CO2--@1@
- 用瘦身膏搽嘴唇得唔得-想薄D唔該!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
此文章來自奇摩知識+如有不便請留言告知
Integers problem發問:
If n and p are integer greater than 1 and if p is a factor of both n+3 and n+10, what is the value of p?
最佳解答:
p is a factor of n+3 => n+3 = p*A for some integer constant A ... (1) p is a factor of n+10 => n+10 = p*B for some integer constant B ... (2) Equation (2) minus equation (1) gives 7 = p * (B-A) = p*C for some integer constant C = B-A So p should also be a factor of 7. Since 7 only has two factors, 1 and 7, and p cannot be 1 as said in the question, p = 7.
其他解答:
文章標籤
全站熱搜
留言列表
