Multiple choice general knowledge math & puzzles

Try... 8 , 54 , 192 , …

  1. 400

  2. 500

  3. 450

  4. 490
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The pattern is n*(n+1)2 - 2n: for n=2: 2*3*2 - 4 = 8; for n=3: 3*4*2 - 6 = 18? No. Let's try: 8 = 2^3, 54 = 3^3*2, 192 = 4^3*3. Actually: 8 = 1*8, 54 = 2*27, 192 = 3*64. The pattern is n(n+1)^3? For n=4: 4*5^3 = 500. Option B (500) matches.

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