It is: 90
Only 80.
90
How about 60 or 90
The first squared number that is a multiple of 10 is three digits.
No, it is a multiple of 10.
There are none.
It is 70
90 is.
It is: 90
It is: 90
80 and 100 both qualify.
Good luck. The LCM is 290.
It is 84.
80
80 and 100 are the only numbers between 67 and 113 that are multiples of 4,5 and 10.
Just 90
Only 80.