Maths Puzzles With Answers #33
Solution:-
it follows this equation 3^n – 2^n where n is integer starting from 0
thus
3^0 – 2^0 = 1 – 1 = 0
3^1 – 2^1 = 3 – 2 = 1
3^2 – 2^2 = 9 – 4 = 5
3^3 – 2^3 = 27 – 8 = 19
3^4 – 2^4 = 65
3^5 – 2^5 = 211
3^6 – 2^6 = 729 – 64 = 665
There is one more way to solve this
3*previous number + 2^(n-1)
0x3+1=1;
1×3+2=5;
5×3+4=19;
19×3+8=65;
65×3+16=211;
211×3+32=665;
So Answer is 665
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