Math Problem Statement
একটি সমান্তর ধারার প্রথম 12 পদের সমষ্টি 144 এবং প্রথম 20 পদের সমষ্টি 560 হলে, এর প্রথম 6 পদের সমষ্টি নির্ণয় কর।
Solution
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Math Problem Analysis
Mathematical Concepts
Arithmetic Sequence
Sum of Sequence
Formulas
S_n = (n/2) * (2a + (n-1)d)
S_12 = (12/2) * (2a + 11d) = 144
S_20 = (20/2) * (2a + 19d) = 560
Theorems
Sum Formula for Arithmetic Sequences
Suitable Grade Level
Grades 9-12
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