other Maths Puzzle Numerical Ability

If, 2=5, 3=10, 4=17, 5=?

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2 square plus one= 5
3 square plus one =10
4 square plus one =17
5 square plus one =26
10 years agoHelpfull: Yes(0) No(1)

other Other Question

The height of a right circular cone is trisected by two planes drawn parallel to its base.What will be the ratios of volumes of the three portions starting from the top?

Note: If the ratio is 1:12:13 , write it as 11213. Which term of the AP: 121, 117, 113, ...... is its first negative term?