Question

1+2+3+4+....................50. Find its sum

Answer 1

Answer:

1 + 2 + 3.......n = n(n+1)/2

⇒50(50 +1)/2 = 50 × 51 / 2

⇒25 × 51

⇒1275

Answer: 1275

Answer 2

Answer:

1+2+3+4+5.......50

=1275