mahadev.... for you just explain me how 2 step has come
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mahadev.... for you just explain me how 2 step has come
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n/2 [108+(n-1)×-3] =513
n/2 [108-3n+3] =513
n/2 [111-3n] =513
n[111-3n] =1026 (diveded by 3)
n[37-n] =342
37n-n^2 =342
n^2 -37n+342 = 0