Question

find the missing number in the following sequence​

Answer 1

Answer:

4)319

is the correct answer

Step-by-step explanation:

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Answer 2

ANSWER:

4. 319

EXPLANATION:

9

19 (9+10)

39 (19+20)

79 (39+40)

159 (79+80)

319 (159+160)

639 (319+320)