题目

.25, .5, .75, 1, 1.25, 1.5, 1.75, 2, . . .


Quantity A

the 78th term of the sequence

Quantity B

19.5

选项

A.

Quantity A is greater

B.

Quantity B is greater

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。
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