If 24x is a multiple of 3,where x is a digit,what is the value of x?

If 31z5 is a multiple of 9,where z is a digit,what is the value of z?You will find that there are two answers for the last problem.Why is this so?

If 21y5 is a multiple of 9,when y is a digit,what is the value of y?

IF 31z5 is a multiple of 3,where z is a digit, what might be the value of z?

If 31 a5 is a multiple of 3,where a is a digit,what could be the values of a?

If A = {x : x is a multiple of 4} and B = {x : x is a multiple of 6}, then A nn B consists of all multiple of

If A = {x : x is a multiple of 2} B = {x : x is a multiple of 5}, then A-B is

Let A = {x : x is a multiple of 3} and B = {x : x is a multiple of 5), then A nn B is given by

If 3x = cosec theta and 3/x = cot theta , find the value of 3(x^(2)- (1)/(x^(2))) .

In a triangle PQR with right angle at Q , the value of angle P is x, PQ = 7cm and QR = 24 cm , then find sin x and cos x

If x = 33^(n) , where n is a positive integral value, then what is the probability that x will have 3 at unit place?