In Green View Apartment, the house of a row is numbered consecutively from 1 to 49. Assuming that there is a value of ‘x’, such that the sum of the numbers of the houses preceding the house numbered...

In Green View Apartment, the house of a row is numbered consecutively from 1 to 49. Assuming that there is a value of ‘x’, such that the sum of the numbers of the houses preceding the house numbered ‘x’ is equal to the sum of the numbers of the houses following it. Then what will be the value of ‘x’? (a) 21 (b) 30 (c) 35 (d) 42