What is the next number in the series?
2,4,7,10,15,18,....

• 23
  Adding (0,1,2,3,4,5,6,7) to the prime numbers.
  2+0=2
  3+1=4
  5+2=7
  7+3=10
  11+4=15
  13+5=18
  17+6=23
• 8 years agoHelpfull: Yes(74) No(1)
• d answer will be 23, b'coz the given series is in the form n+prime number.
  0+2,1+3,2+5,3+7,4+11,5+13,6+17.......
• 8 years agoHelpfull: Yes(8) No(1)
• The difference between 2 and 4 is 2
  4 and 7 is 3
  7 and 10 is 3
  10 and 15 is 5
  15 and 18 is 3
  so the difference pattern follow 2 3 3 5 3
  it looks like a pyramid so the next difference would be 3 so 18+3 =21
  Ans)21
• 8 years agoHelpfull: Yes(3) No(3)
• 2*2=4 4+3=7
  2*5=10 10+5=15
  2*9=18 18+7=25
  
  
• 8 years agoHelpfull: Yes(1) No(7)
• 2,3,3,5,8,8so the ans will be18+8=26
  
• 8 years agoHelpfull: Yes(1) No(7)
• 21 series difference in pattern 233533
• 8 years agoHelpfull: Yes(1) No(1)
• 2,
  2^2=4,
  3^2-2=7,
  3^2+1=10,
  4^2-1=15,
  4^2+2=18,
  5^2-2=23,
  5^2+1=26.
  Like this -2,+1 & -1,+2 goes on
• 8 years agoHelpfull: Yes(0) No(7)
• 21
  gap between two numbers is 3
• 8 years agoHelpfull: Yes(0) No(8)