Think You’re Intelligent? Then See How You Do With This Logic Quiz!

70, 68, 64, 58, X, 40. Which number is letter X?

Retry Correct Incorrect You arrive at each number in the sequence by subtracting 2x the previous numbers position from the previous number. So, 4 x 2 minus 58 is 58 – 8 which gives you 50.

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Oliver Berg/picture alliance via Getty Images

Oliver Berg/picture alliance via Getty Images

70, 68, 64, 58, X, 40. Which number is letter X?

• 50
• 44
• 52
• 40