Find a rule to fill in: 1, 15, 215, 2145. What's the next one? Explain the reason

Find a rule to fill in: 1, 15, 215, 2145. What's the next one? Explain the reason


That's not right? It should be 5, 152, 152, 145. The number they get by dividing each number by 5 is 1 / 10 of the number they get by multiplying 2



Fill in the number according to the rule (and explain the reason)
5,6,__ ,12,15,__ ,20,24…


5,6,10,12,15,18,20,24 reasons: 1 * 5,1 * 6,2 * 5,2 * 6,3 * 5,3 * 6,4 * 5,4 * 6



What is the national standard thickness of metal trunking