Question

B= 1+2-3-4+5+6-...-303-304+305+306

Answer 1

B = 1 + 2 - 3 - 4 + 5 + 6 - ..... - 303 - 304 + 305 + 306

B = 1 + ( 2 - 3 - 4 + 5 ) + ( 6 - 7 - 8 + 9 ) + ........ + ( 302 - 303 - 304 + 305 ) + 306

B = 1 + 0 + 0 + ...... + 0 + 306

B = 1 + 306

B = 307

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