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EEJ MAIN Aptitude QUESTION #10970
Question 1
A pattern sequence: ◆◇◆◆◇◆◆◆◇◆◆◆◆◇... The diamonds (◆) between each ◇ increase by one each time. How many total symbols are there up to and including the 5th ◇?
  • 25
  • 30
  • 20✔️
  • 35
Correct Answer Explanation

The pattern between ◇ symbols: 1◆, 2◆, 3◆, 4◆, 5◆ + five ◇ symbols.

Total ◆ symbols = \(1+2+3+4+5 = 15\

Total ◇ symbols = 5

Total symbols up to and including the 5th ◇ = \(15 + 5 = \mathbf{20}\

Wait — let me recount: up to 5th ◇: we have ◆, ◇, ◆◆, ◇, ◆◆◆, ◇, ◆◆◆◆, ◇, ◆◆◆◆◆, ◇ = 1+1+2+1+3+1+4+1+5+1 = 20. Answer = 20 (option C, index 2). Correction noted.