Question: when positive integer n is divided by 5 , the remainder is 1 . when n is divided by 7 , the remainder is 5 . what is the smallest positive integer p , such that ( n + p ) is a multiple of 30 ?
A) 1
B) 2
C) 4
D) 19
E) 20
Correct answer: c
Grade: 6 | Topic: Number System | Difficulty: Hard | Standard: 6.NS.B.2