If 5454842R is divisible by 10, find the value of R.
0
6
4
8
If a number is divisible by 10, then the unit's digit must be 0.
Therefore, 5454842R should have 0 as its unit's digit.
Hence, the value of R is zero.
If x7y5 is exactly divisible by 3, then the least value of (x + y) is
(a) 6
(b) 0
(c) 4
(d) 3
If 64y8 is exactly divisible by 3, then the least value of y is: