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Question : Directions: Which of the following numbers will replace the question mark (?) in the given series?
14, 45, 138, ?, 1254

Option 1: 170

Option 2: 211

Option 3: 451

Option 4: 417


Team Careers360 7th Jan, 2024
Answer (1)
Team Careers360 16th Jan, 2024

Correct Answer: 417


Solution : Given:
14, 45, 138, ?, 1254

Multiply the previous term by 3 then add 3 to obtain the next term.
(14 × 3) + 3 = 42 + 3 = 45; (45 × 3) + 3 = 135 + 3 = 138; (138 × 3) + 3 = 414 + 3 = 417; (417 × 3) + 3 = 1251 + 3 = 1254

So, 417 is the missing term in the given series. Hence, the fourth option is correct.

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