Select the number from among the given options that can replace the question mark (?) in the following series.
20, 110, 200, 290, 380, ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 470.
Given series: 20, 110, 200, 290, 380, ?
20 + 90 = 110; 110 + 90 = 200; 200 + 90 = 290; 290 + 90 = 380; 380 + 90 = 470