Grades 11-12 Video Solutions 2024-2024_11-12

Video Transcription

Which of these integers is 2 less than a multiple of 10, 2 more than a square, and 2 times a prime?  Note that all of the options except E are 2 less than a multiple of 10 since they all end in the digit 8.  Only C, 38, and D, 18 are 2 more than a square. But only 38 is 2 times a prime. Therefore, our answer must be C by elimination.

Video Summary

Which of these integers is 2 less than a multiple of 10, 2 more than a square, and 2 times a prime? Note that all of the options except E are 2 less than a multiple of 10 since they all end in the digit 8. Only C, 38, and D, 18 are 2 more than a square. But only 38 is 2 times a prime. Therefore, our answer must be C by elimination.