Question

Find the missing number in the series 1,4,11,29,----,199?

Answer 1

Answer:

Answer is 76

Step-by-step explanation:

$t_{n} = 3t _ {(n - 1)} \: - t_{(n - 2)}$

$3 \times 4 - 1 = 12 - 1 = 11$

$3 \times 11 - 4 = 33 - 4 = 29$

$3 \times 29 - 11 = 87 - 11 =76$

so the missing term is 76