8
2+3+1=6
6+7+1=14
14+15+1=30
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the odd no. is 8 2*3=6 2*7=14 2*15=30
The next number in the sequence would be 30. The general rule is multiply by 2, then add 1. 1 x 2 = 2 2 + 1 = 3 3 x 2 = 6 6 + 1 = 7 7 x 2 = 14 14 + 1 = 15 15 x 2 = 30
1, 2, 3, 5, 6, 10, 15, 30 1, 2, 3, 6, 7, 14, 21, 42
8
hcf(14, 30) = 2 lcm(14, 30) = 210 14 = 2 x 7 30 = 2 x 3 x 5 hcf = 2 lcm = 2 x 3 x 5 x 7 = 210