cho biết a+4b chia hết cho 13 với a,b là các số tự nhiên. Chứng tỏ rằng: 10a+b chia hết cho 17

Các câu hỏi liên quan

I. Write the second sentence so that it has a similar meaning to the first. 34. Was the bike repaired by your father yesterday?  Did …………………………………………………….……………………………………….. 35. Study harder and you will pass your exam.  If you…………………………………………………….……………………………………….. 36. The girl is very friendly. She lived next door to us. The girl ............................................................................................................................................ 37. Ba said "I’m going to meet your sister in front of the station, Liz".  Ba said .............................................................................................................................................. 38.She hadn’t known me until my mother told her.  Not until ........................................................................................................................................... II. Use the cues given, write the complete the sentence: 39. I/ used/ fly/ kite/ when/ I/ small/ boy. ……………………............................................................................................................................. 40. At/ time/ last/ week/ we/ collect/ some garbage/ beach. ……………………………………….................................................................................................