M4maths
Maths Puzzle
Numerical Ability
What is the next number of the following sequence
54, 21, 3, 9, 81,.......
Read Solution (Total 2)
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- ans is 9
4^2=16+5=21
1^2=1+2=3
3^2=9+0=9
9^2=81+0=81
1^2=1+8+9
logic second digit ^2 +first digit =next number in the sequence - 9 years agoHelpfull: Yes(2) No(1)
- (No. At units place)^2+no. At tens place
So answer is 9. - 9 years agoHelpfull: Yes(0) No(0)
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