Question

First five terms and twelve terms of tn=2n-1

Answer 1

t1=2n-1
=2×1-1
=1
t2=2n-1
=2×2-1
=3
t3=2n-1
=2×3-1
=5
t4=2n-1
=2×4-1
=7
t5=2n-1
=2×5-1
=9
Now,
t12=2n-1
=2×12-1
=23
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