Multiple choice

Find the wrong number in the following number series- 4 6 7 13 34 122

  1. 7

  2. 6

  3. 122

  4. 34

  5. 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The pattern is: 4+6-3=7, 6+7-?=13. Let's find the actual pattern: 7-4=3, 13-7=6, 34-13=21, 122-34=88. The differences are: 3, 6, 21, 88. These don't form an obvious pattern. Alternatively: (4+6)*1 - 3 = 7, (6+7)*1 - 0 = 13? No. Let's try: 4×1+2=6, 6×1+1=7, 7×2-1=13? No pattern. The wrong number is 6 - if it were 5, then 4+5-2=7, 5+7+1=13, 7+13+14=34? Still unclear. The claimed answer B (6) is the wrong number.

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