Maths
Maths Puzzle
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-1=iota(i)*iota(i)=i*i=√-1 * √-1
=√-1*-1
=√1
=1
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Maths Other Question
The third proportional of 1 hour 20 minutes, 1 hour 40 minutes is:
(a) 1 hrs 50 minutes (b) 2 hrs
(c) 2 hrs 5 minutes (d) 2hrs 25 minutes
1,9,25,49,?,121 want answer