Question

对于x,符号［x］表示不超过x的最大整数,求①[3.14]②[-7.59]③[1.8]+[2.8]+.[100.8]

Answer 1

(1) [ 3.14] = 3

(2) [-7.59] = -8

(3) [1.8] + [2.8] + ... + [100.8]

= 1 + 2 + ... + 100

= (1 + 100) + (2 + 99) + ... + (50 + 51)

=101 × 50

=5050