Select the number from among the given options that can replace the question mark (?) in
the following series.
5, 18, 70, 278, ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 1110.
Given series: 5, 18, 70, 278, ?
The series follows the pattern:
(5 × 3) + (5 - 2) = 15 + 3 = 18
(18 × 3) + (18 - 2) = 54 + 16 = 70
(70 × 3) + (70 - 2) = 210 + 68 = 278
(278 × 3) + (278 - 2) = 834 + 276 = 1110
So, the next term in the series is 1110.
Hence, the correct answer is 1110.