Question: how many positive integers less than 26 are prime numbers , odd multiples of 5 , or the sum of a positive multiple of 2 and a positive multiple of 4 ?
A) 27
B) 21
C) 24
D) 22
E) 20
Correct answer: B
Grade: 7 | Topic: Number System | Difficulty: Medium | Standard: 7.NS.A.2