Malcolm wants to visit Isabella after school today and knows the street where she lives but doesn't know her house number.She tells him,“My house number has two digits,and exactly three of the following four statements about it are true.”(1)It is prime.
(2)It is even.
(3)It is divisible by 7.
(4)One of its digits is 9.
This information allows Malcolm to determine Isabella's house number.What is its units digit?( ?。?br />Malcolm今天放學(xué)后想去拜訪Isabella,他知道她住在哪條街,但不知道她的門牌號碼。她告訴他:“我的門牌號有兩位數(shù),以下四個(gè)陳述中有三個(gè)是正確的?!?br />(1)它是一個(gè)質(zhì)數(shù)。
(2)它是偶數(shù)。
(3)它可以被7整除。
(4)它的其中一個(gè)數(shù)字是9。
這些信息使Malcolm能夠確定Isabella的門牌號碼。它的個(gè)位數(shù)字是多少?( ?。?/h1>
【考點(diǎn)】數(shù)的整除特征.
【答案】D
【解答】
【點(diǎn)評】
聲明:本試題解析著作權(quán)屬菁優(yōu)網(wǎng)所有,未經(jīng)書面同意,不得復(fù)制發(fā)布。
發(fā)布:2024/9/7 1:0:8組卷:5引用:1難度:0.5
相似題
-
1.一個(gè)整數(shù)乘以17以后,乘積的最后三位數(shù)是327,那么這樣的整數(shù)中,最小的是.
發(fā)布:2025/4/20 21:0:1組卷:39引用:3難度:0.9 -
2.“吉林市達(dá)慧學(xué)校好”表示各位數(shù)字互不相同且能被72整除的八位數(shù),那么“吉林市好”代表的四位數(shù)最小是,此時(shí)“達(dá)慧學(xué)校”代表的四位數(shù)最小是.
發(fā)布:2025/4/20 21:30:1組卷:23引用:1難度:0.9 -
3.1234567891011121314…20082009除以9,商的個(gè)位數(shù)字式.
發(fā)布:2025/4/20 21:30:1組卷:75引用:3難度:0.5
相關(guān)試卷