Number Properties Puzzle – Challenge 16
Enjoy exercising your brain? Looking for great math puzzles? If so, then you are in the right place.
Challenge:
What digit appears in the units place in the number obtained when \(2^{136}\) is multiplied out?
A- 0
B- 2
C- 4
D- 6
E- 8
The Absolute Best Book to challenge your Smart Student!
The correct answer is D.
Try to find the pattern:
\(2^1 = 2, 2^2 = 4, 2^3 = 8, 2^4 = 16, 2^5 = 32, 2^6 = 64\),
The pattern repeats every 4 numbers. Therefore, when \(2^{136}\) is multiplied out, the unit digit is 6. Why?
Reza is an experienced Math instructor and a test-prep expert who has been tutoring students since 2008. He has helped many students raise their standardized test scores--and attend the colleges of their dreams. He works with students individually and in group settings, he tutors both live and online Math courses and the Math portion of standardized tests. He provides an individualized custom learning plan and the personalized attention that makes a difference in how students view math.
More math articles
- Accuplacer Math FREE Sample Practice Questions
- Math Tutor Online: Practice Guide
- How is the ParaPro Test Scored?
- Top 10 ISEE Lower Level Prep Books (Our 2022 Favorite Picks)
- 4th Grade STAAR Math Practice Test Questions
- How to Multiply and Dividing Functions? (+FREE Worksheet!)
- 6th Grade TNReady Math Worksheets: FREE & Printable
- Overview of the FTCE General Knowledge Math Test
- How to Find the Perimeter of Right-Angled Triangle?
- 10 Most Common ACCUPLACER Math Questions
What people say about "Number Properties Puzzle - Challenge 16"?
No one replied yet.