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4, 12, 24, 36, 50, 72, 98, 120, 144, ?
What's the next number in this series?
4, 12, 24, 36, 50, 72, 98, 120, 144, ?
4, 12, 24, 36, 50, 72, 98, 120, 144, ?
Answer
180.The nth entry is the nth composite number multiplied by n.
4=4*1, 12=6*2, 24=8*3, 36=9*4, 50=10*5, 72=12*6, 98=14*7, 120=15*8, 144=16*9, 180=18*10.
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