a black monkey is climbing a 200meter tall building.it starts from the groun climbs 4m in 1st second,slips 2m in 2n secon,climbs 6m in 3rd second ,ten slips2m in 4th second,climbs 8m in 5th second,slips 2m in the next and so on... when would the monkey reach the top of the building?
a) 25th second
b) 26th second
c) 27th second
d) 30th second

• Answer is 27.
• 10 years agoHelpfull: Yes(4) No(13)
• 4m1
  2 2
  7 3
  5 4
  13 5
  11 6
  21 7
  19 8
  31 9
  29 10
  43 11
  41 12
  57 13
  55 14
  73 15
  71 16
  91 17
  89 18
  111 19
  109 20
  133 21
  131 22
  157 23
  155 24
  183 25
  181 26
  211 27
  
• 10 years agoHelpfull: Yes(3) No(2)
• can u Mr.masud plz explain how it is 27
• 10 years agoHelpfull: Yes(1) No(2)