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" Find the sum ":1+(-2)+(-5)+(-8)+.....+...

" Find the sum ":1+(-2)+(-5)+(-8)+.....+(-236)

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Find the sum (i) 1+(-2)+(-5)+(-8)+ … +(-236) (ii) (4-(1)/(n))+(4-(2)/(n))+(4-(3)/(n))+ … upto n terms. (iii) (a-b)/(a+b)+(3a-2b)/(a+b)+(5a-3b)/(a+b)+ … to 11 terms.

Find the sum (i) 1+(-2)+(-5)+(-8)+ … +(-236) (ii) (4-(1)/(n))+(4-(2)/(n))+(4-(3)/(n))+ … upto n terms. (iii) (a-b)/(a+b)+(3a-2b)/(a+b)+(5a-3b)/(a+b)+ … to 11 terms.

Find the sum : (-5)+(-8)+(-11) + …. + (-230)

Find the sum : (-5)+(-8)+(-11) + …. + (-230)

Find the sum: 4(3)/(5)+2(7)/(8)

Find the sum: 2/5 + 1/5

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Find the sum: 5/8+ (-7)/8

Find the sum: 5/(8)+8/ ( 28)

Find the sum: 5/9+ (-8/9)