Question

Find the missing number in the series:
13, 42, 129, 390, ?
a) 1173 b) 642 c) 784 d) 1170

Answer 1

Answer:

C

Step-by-step explanation:

Because that is the true

Hope to help

Answer 2

Answer:

1173

Step-by-step explanation:

13×3+3=39+3=42

42×3+3=126+3=129

129×3+3=387+3390

390×3+3= 1170+3=1173

the missing number in the series:

the missing number in the series:13, 42, 129, 390 is 1173