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Maths Puzzle
Logical Reasoning
1,5,18,66,280,1420
Read Solution (Total 1)
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- 8544
sequence r like---> a(n)= n*(a(n-1)+4) & a(0)=1
a(1)= 1*(a(1-1)+4)=5
a(2)= 2*(a(2-1)+4)=2*(5+4)=18
a(3)= 3*(a(3-1)+4)=3*(18+4)=66
similarly
a(4)=4*(a(3)+4)=4*(66+4)=280
a(5)=5*(280+4)=1420
a(6)=6*(1420+4)=6*1424= 8544 (ans) - 9 years agoHelpfull: Yes(1) No(0)
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