Question

In a four-digit number, the product of thousands digit and units digit is zero while their difference is 7. Product of the m iddle digits is 1 8. The thousands digit is as much noore than the units digit as the, hundreds digit is more than the tens digit. The four-digit number is

Answer 1

Answer:

let the number be abcd

⟹a+c=4,b+d=15,d−a=7

a can be 1,2,3,4 from a+c=4 but a cannot be 3 and 4 from d-a=7 as d exceeds 9 which is imposible

for a=1 the number is 1738 and for a=2 the number is 2629 ∵the required number is 1738