Algebra Puzzle – Challenge 51
Sharing this fun puzzle with your kids or students is a great way to help them improve their problem-solving skills. For additional educational resources, . For additional educational resources
Challenge:
In a sequence of numbers, each term is three less than three times the previous term. If the fourth term in this sequence is 150, what is the first term?
The Absolute Best Book to Challenge Your Smart Student!

The correct answer is 7.
Each term is three less than three times the previous term. If the fourth term is 150, therefore, the third term is 51.
The second term is 18. Because, 51 is 3 less than 54, which is three time of 18.
The first term is 7!The Absolute Best Books to Ace Algebra
Related to This Article
More math articles
- Points, Lines, and Rays for 4th Grade
- FREE 4th Grade PSSA Math Practice Test
- Infinitely Close But Never There
- The Ultimate Ready to Work Algebra 1 Course (+FREE Worksheets)
- How to Decompose Fractions?
- The Ultimate 7th Grade MAP Math Course (+FREE Worksheets)
- Full-Length SSAT Middle Level Math Practice Test
- The Best Calculators for Back to School 2026
- FREE 8th Grade PSSA Math Practice Test
- Bеѕt Lарtорѕ for Teachers
















What people say about "Algebra Puzzle – Challenge 51 - Effortless Math: We Help Students Learn to LOVE Mathematics"?
No one replied yet.