Calculate the sum of first 60 natural numbers.
Pick:
A) 1839 B) 2830 C) 1830 D) 1831 E) 1835

Rationale: "solution we know that ( 1 + 2 + 3 + . . . . . + 60 ) = n ( n + 1 ) / 2 therefore ( 1 + 2 + 3 + . . . . + 60 ) = ( 60 × 61 / 2 ) = 1830 . answer c"
Answer: C