题目
.25, .5, .75, 1, 1.25, 1.5, 1.75, 2, . . .
Quantity A
the 78th term of the sequence
选项
C.The two quantities are equal.
D.The relationship cannot be determined from the information given.
解析
该数列为等差数列(AP),首项 \(a = 0.25\),公差 \(d = 0.25\)。
第 \(n\) 项公式:\(a_n = a + (n-1)d\)
第 78 项:
\[
a_{78} = 0.25 + 77 \times 0.25 = 19.5
\]
答案为 C。