111, 129, 183, 345, 831, ?
Answers
Answered by
1
Answer:
111+18=129
129+54= 183
183+ 162= 345
831+ 486=1317
Answered by
4
Given : 111 129 183 345 831
To Find : Next number in Sequence
Solution:
111
111 + 2*3² = 111 + 2*9 = 111 + 18 = 129
129 + 2*3³ = 129 + 2 * 27 = 129 + 54 = 183
183 + 2*3⁴ = 183 + 2*81 = 183 + 162 = 345 (54 x 3)
345 + 2*3⁵ = 345 + 2 * 243 = 345 + 486 = 831
831 + 2*3⁶ = 831 + 2 * 729 = 831 + 1458= 2289
Next number = 2289
Sequence is Tₙ = Tₙ₋₁ + 2*3ⁿ where T₁ = 111
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