M4maths
Maths Puzzle
Category
What is the next number of the following sequence
54, 21, 3, 9, 81,...
Read Solution (Total 3)
-
- 2nd digit ² +first digit = next number
4² + 5 = 21
1² + 2 = 3
3² + 0 = 9
9² + 0 = 81
1² + 8 = 9
So the next number is 9. - 9 years agoHelpfull: Yes(1) No(0)
- ans 9
second digit ^2+first digit=next number - 9 years agoHelpfull: Yes(0) No(0)
- (No. At units place)^2+no. At tens place
So answer is 9. - 9 years agoHelpfull: Yes(0) No(0)
M4maths Other Question