Question

How many terms of the arithemetic sequence 6, 10, 14,..... must be added to get 510

Answer 1

Answer:

$510 = n \div 2(2 \times a + (n - 1) \times d) \\510 = n \div 2(2 \times 6(n - 1) \times 4) \\ solve \: for \: \: \: \: n \: \: you \: \: will \: get \: answer.$