कर उयि पर पस्परमबूा ंही ८ PAT

1.	कर उयि पर पस्परमबूा ंही ८ PAT fepe के\| कप
Answer» Suppose, S=1+2+3+............................. n (term) Also S=n+(n-1)+(n-2)..........................3+2+1 adding that 2S=(n+1)+(n+1)+(n+1)+(n+1)+(n+1)+(n+1)+...........................(n+1) 2S =n.(n+1) S=n.(n+1)/2 Hence proved. Like my answer if you find it useful!

कर उयि पर पस्परमबूा ंही ८ PAT fepe के| कप

Answer»

Suppose, S=1+2+3+............................. n (term)

Also S=n+(n-1)+(n-2)..........................3+2+1

adding that

2S=(n+1)+(n+1)+(n+1)+(n+1)+(n+1)+(n+1)+...........................(n+1)

2S =n.(n+1)

S=n.(n+1)/2

Hence proved.

Like my answer if you find it useful!