What will come in the place of questions (?) mark in following number series.…
2021
What will come in the place of questions (?) mark in following number series.
9, 19, 39, 79, ?, 319
- A.
221
- B.
175
- C.
125
- D.
159
- E.
199
Attempted by 35 students.
Show answer & explanation
Correct answer: D
Each term is doubled and 1 is added: 9, 19, 39, 79, 159, 319.