If x is equal to the sum of the even integers from 40 to 60, inclusive, and y is the number of even integers from 40 to 60, inclusive, what is the value of x + y ?
550
551
560
561
572
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y is the number of even integers from 40 to 60, inclusive, Y是40~60偶数的个数!个数!
有11项
要认真思考啊少年,不然没人能救你了……
y is the number of even integers from 40 to 60……意思是count the numbers....lol..
x=550 y=11
求和公式=40+42+44+6+60=550,共有11个数,所以,550+11+561
and y is the number of even integers from 40 to 60 40到60中间有几个数!!!!!!!!
我竟然看成了y是40-60的一个数,没有一个是答案
【整数奇偶性】类型题目
X =40到60的全部偶数的和 Y =40到60的全部偶数的数量 X= 40+42+44+46+48+...60 =550 Y = 11
the number of even integers 偶数个数,40-60的even integers 有11个
y is the number of even integers from 40 to 60 - y是40-60偶数的个数
y is the number of even integers from 40 to 60, inclusive, Y是40~60偶数的个数!个数!
有11项
要认真思考啊少年,不然没人能救你了……
y is the number of even integers from 40 to 60……意思是count the numbers....lol..
x=550
y=11
求和公式=40+42+44+6+60=550,共有11个数,所以,550+11+561
and y is the number of even integers from 40 to 60
40到60中间有几个数!!!!!!!!
我竟然看成了y是40-60的一个数,没有一个是答案
我也是。。
我也是..
+10086
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【整数奇偶性】类型题目
X =40到60的全部偶数的和
Y =40到60的全部偶数的数量
X= 40+42+44+46+48+...60 =550
Y = 11
the number of even integers 偶数个数,40-60的even integers 有11个
y is the number of even integers from 40 to 60 - y是40-60偶数的个数