Các câu hỏi tương tự
Ton tai hay khong cac so nguyen a,b,c sao cho:
a.b.c.d+a=1999
a.b.c.d+b=999
a.b.c.d+c=99
a.b.c.d+d=9
ton tai hay khong 2 so nguyen duong a va b sao cho a^2+3b^2=2006
co ton tai hai khong cac so tu nhien a,b c thoa man dong thoi cac dang thuc sau :abc + a = 999;abc+c=9
co ton tai hay ko so nguyen a,b,c thoa man tat ca cac dieu kien sau abc + a = -625 , abc + b = -633 , abc + c = -597
Khong tinh toan hay cho biet cac so sau la nguyen to hay hop so :
a) 191 . 3 + 240
b) 10^9 + 2
c) 91 . 13 - 29 . 13
Cho so nguyen a lon hon 32.hoi ton tai hay khong so tu nhien k thoa man a40<k<a41 ma k co it nhat 61 chu so 0 ở tan cung
Co ton tai cac cap so nguyen a, b nao thoa man:
a) -321*a - 87 *b = 2017
b) 918*a -27*b = -1002
ton tai hay ko 2 so nguyen a,b:
a)(-25)a+72b=2002
b)512a-104b=(-2004)
ton tai hay khong mot so tu nhien sao cho so do chia 15 du 7 , chia cho 24 du 9