SOLUTION: What is the next number in the series 120,95,79,70 ,?

Question 635711: What is the next number in the series 120,95,79,70 ,?
Found 3 solutions by stanbon, opeodu, richwmiller:
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
What is the next number in the series 120,95,79,70 ,?
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1st: 120
2nd: 120-25 = 95
3rd: 95 -16 = 79
4th: 79 - 9 = 70
5th: 70 - 4 = 66
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Cheers,
Stan H.
Answer by opeodu(24)   (Show Source): You can put this solution on YOUR website!
if you consider their difference
120-95=25
95-79=16
79-70=9
they are perfect squares decreasing in order 5,4 and 3 so the next square is 4. hence the next number is 70+4=74

Answer by richwmiller(17219)   (Show Source): You can put this solution on YOUR website!
120 -25 9 -2
95 -16 7 -2
79 -9 5
70 -4
66
next number is 66
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