PHC-AizWallenstein
Eternal Poster
Find missing number in the sequence 1,9,25,49,?,121 ?
thanks,
thanks,
How about this problem?The given sequence is a series of perfect squares of consecutive odd numbers.
1 = 1^2
9 = 3^2
25 = 5^2
49 = 7^2
121 = 11^2
To find the missing number in the sequence, we need to determine the next perfect square of the consecutive odd number.
The next odd number after 7 is 9, and its square is 81.
Therefore, the missing number in the sequence is 81.
Thus the complete sequence is 1, 9, 25, 49, 81, 121.
The given sequence does not appear to follow any clear pattern or rule. However, there are a couple of possible ways to approach this problem.How about this problem?
16,8,12,6,?,5,9 ?
16, ,12, ,10, ,916,8,12,6,?,5,9