If 7x8 is exactly divisible by 9, then the least value of x is
(a) 0
(b) 2
(c) 3
(d) 5
If z=(√3+i)3(3i+4)2(8+6i)2, then |z| is equal to
If P(k) is the statement 23k - 1 is divisible by 7, then P(k + 1) is