Question

193,222,251,280,309. which number will complete the series?

Answer 1

The answer is 338
because there is a gaph of +29 one after another..

i.e,
193 +29 =222
222 + 29 =251
251 + 29 = 280
280 + 29 = 309
&
Finally
309 + 29 = 338

hope it will help