What is the 1000th triangular number?

Answer 1

The formula for the nth triangular number is Tn = n(n+1)/2. To find the 1000th triangular number, we substitute n = 1000 into the formula: T1000 = 1000(1000+1)/2 = 1000(1001)/2 = 500500. Therefore, the 1000th triangular number is 500500.

Answer 2

Oh, dude, the 1000th triangular number is technically 500500. It's calculated by multiplying 1000 by 1001 and then dividing by 2. But hey, who's really keeping track of all these numbers anyway, right? Like, just enjoy the fact that it's a big ol' number with a fancy name.

Answer 3

The formula for triangular numbers is (half of n) multiplied by (n+1). Putting in 1000 as n you get: 500 multiplied by 1001 which equals 500500.

The answer is 500500.

Answer 4

500500