Campus
Maths Puzzle
Logical Reasoning
General Mental Ability
find wrong number
3, 7, 15, 27, 63, 127, 255
Read Solution (Total 3)
-
- 27 is wrong, it should be 31
3*2 +1 = 7
7*2 + 1 = 15
15*2 +1 = 31
31*2 +1 = 63
63*2 + 1 = 127
127*2 +1 = 255 - 9 years agoHelpfull: Yes(2) No(0)
- 27,bcoz all number r multiplied just like as(3*2+1=7,7*2+1=15,63*2+1=127......)but 27 not follow this.
- 9 years agoHelpfull: Yes(0) No(0)
- 27 it is divisible
- 9 years agoHelpfull: Yes(0) No(0)
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