If 783842M is divisible by 10, find the value of M.
0
1
2
3
If a number is divisible by 10, then the unit's digit must be 0.
Therefore, 783842M should have 0 as its unit's digit.
Hence, the value of M is zero.
If 37y4 is exactly divisible by 9, then the least value of y is
(a) 2
(b) 3
(c) 1
(d) 4
If 37y4 is exactly divisible by 9, then the smallest value of y is