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Question : Directions: Which of the following four options will replace the question mark (?) in the following series?
48, 68, ?, 138, 188, 208

Option 1: 118

Option 2: 88

Option 3: 128

Option 4: 108


Team Careers360 16th Jan, 2024
Answer (1)
Team Careers360 22nd Jan, 2024

Correct Answer: 118


Solution : Given:
48, 68, ?, 138, 188, 208

Add 20 and 50 alternatively to the previous numbers to obtain the next numbers of the series –
48 + 20 = 68; 68 + 50 = 118; 118 + 20 = 138; 138 + 50 = 188; 188 + 20 = 208

So, 118 is the missing number of the series. Hence, the first option is correct.

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