Question

129,141,147,159,174​

Answer 1

Step-by-step explanation:

If we carefully observe the sequence, we can tell that that the next term would be the equal to the sum of the previous term and the summation value of all the digits of the same.

129 ↪1 + 2 + 9 = 12

So, 129 + 12 = 141

141 ↪1 + 4 + 1 = 6

141 + 6 = 147

147↪1 + 4 + 7 = 12

147 + 12 = 159

159↪1 + 5 + 9 = 15

159 + 15 = 174

So, the next number of the series is :

174↪1 + 7 + 4 = 12

174 + 12 = 186