Multiple choice

Passage

Section A : Logical Reasoning

The next term of the sequence 4, 9, 21, 47, 101, 211, … is

  1. 421

  2. 433

  3. 427

  4. 441
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The pattern is: 4*2+1=9, 9*2+3=21, 21*2+5=47, 47*2+7=101, 101*2+9=211. The next term is 211*2+11 = 422+11 = 433.

AI explanation

The pattern is to multiply each term by 2 and then add 1 to get the next term. For example, 4 times 2 plus 1 is 9, and 9 times 2 plus 3 is 21. Following this specific rule where the added number doubles (1, 3, 5, 7, 9), 211 times 2 plus 11 results in 433.

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