2,5,10,17,26,...2,5,10,17,26,...
2=12+12=12+1
5=22+15=22+1
10=32+110=32+1
17=42+1=1717=42+1=17
.........
số thứ 100 là : 1002+1=10000+1=100011002+1=10000+1=10001
Tim so thu 100 cua day : 2,5,10,17,26,....
Tim so hang thu 100 cua day so sau
a) 1,3,6,10,15...
b) 2,5,10,17,26...
cho day 2,11,29,56,92,.. a) tim so hang thu 100 cua day b)so 407 la so hang thu may cua day
cho day 2,11,29,56,92,..
a) tim so hang thu 100 cua day
b)so 407 la so hang thu may cua day
Cau 4: Cho day so 4,7,10,13,16,.....
a/tim so thu 100 cua day,so thu n cua day .
b/So 45+23 co mat trong day do ko
cho day so 47101316...
tim so thu 100
so thu n cua day do
Tim so hang thu 100 cua cac day so sau : 1;3;6;19;15;..........................................
cho 3 , 24 , 63 , 120,195,....
a) tim quy luat cua day so tren
b)tim so hang thu 100
c)2048co pai la so hang cua day k
tim so hang thu 100 cua day 0 1 4 9 16 ...
