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Maths Puzzle
Numerical Ability
Number System
what is the next number of 7, 13, 31, 57, 123 ??
Read Solution (Total 2)
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- Tn = n^2 + (n+1) , where n = 2,3,5,7,11,13 (prime numbers)
7 = 2^2 + 3
13 = 3^2 + 4
31 = 5^2 + 6
57 = 7^2 + 8
123 = 11^2 + 12
next is (13^2 + 14) = 183 - 9 years agoHelpfull: Yes(6) No(1)
- I guess it is 297
Use pascal triangle - 9 years agoHelpfull: Yes(1) No(0)
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