Question

solve and explain 28,34,45,61,72___. 1,4,2,8,6,24,22,88_____. 840,168,42,14,7_____. 10,15,30,45,90_______. what next number come for these questions

Answer 1

the first answer is 78 because 28+6=34,34+11=45,45+6=61,61+11=72,72+6=78

Answer 2

(1)28,34,45,61,72,___
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(2)1,4,2,8,6,24,22,88,86 because 1
1×4=4
4-2=2
2×4=8
8-2=6
6×4=24
24-2=22
22×4=88
88-2=86
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(3)840,168,42,14,7,7 because
840÷5=168
168÷4=42
42÷3=14
14÷2=7
7÷1=7
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(4)10,15,30,45,90,135
10×3=30
15×3=45
30×3=90
45×3=135