nature of following series
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1+2+3+4---=numerical order.a)5+6+7
1+1/2+1/4+1/8+-----=multiply the denominator with 2
1=1/1 1*2=2*2=4*2=8----
next no. is 1+1/2+1/4+1/8+1/16+1/32-----
1²+3²+5²+7²----=1,3,5,7 are odd no.s
next no.is 9²+11²+13²+15²---------
1.3+3.5+5.7----=add 2.2 to each no. to get the next no.
1.3+3.5+5.7+7.9+9.11+11.13+13.15----
1+1/2+1/4+1/8+-----=multiply the denominator with 2
1=1/1 1*2=2*2=4*2=8----
next no. is 1+1/2+1/4+1/8+1/16+1/32-----
1²+3²+5²+7²----=1,3,5,7 are odd no.s
next no.is 9²+11²+13²+15²---------
1.3+3.5+5.7----=add 2.2 to each no. to get the next no.
1.3+3.5+5.7+7.9+9.11+11.13+13.15----
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