Question

hello frnds please help me !!!!!✔✔❤❤✌​

Answer 1

Khushi mark it as brainliest

Answer 2

Answer:

x=35!!

Step-by-step explanation:

   

sum of first no. till (x-1)

a=1

l=x-1   s(x-1)=x-1/2(a+l)

                  =x-1(1+x-1)/2

                  =x²-x/2

sum of no. from(x-1) to 49

a=x+1

l=49

n=l-a/d+1

n=49-x-1/1+1

n=49-x

∴s(49-x)=49-x/2(x+1+49)

            =49-x/2(50+x)

∴BY GIVEN DATA,

x²-x/2=49-x/2(50+x)

x²-x=49x-x²+2450-50x

2x²-x=2450-x

2x²=2450

x²=1225

∴x=35

THEREFORE, NO. OF HOUSES IS 35

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