`tan 5^@` is (A) rational number (B) Irrational number (C) prime number (D) none of these

(log)_4 18 is (a) a rational number (b) an irrational number (c) a prime number (d) none of these

(log)_4 18 is a rational number (b) an irrational number (c)a prime number (d) none of these

log_(4)18 is a rational number (b) an irrational number a prime number (d) none of these

Is pi a rational or an irrational numbers?

The product of any natural number and the smallest prime is (a)an even number (b) an odd number a prime number (d) None of these

The number (log)_2 7 is (1990, 2M) (a) an integer (b) a rational number (c) an irrational number (d) a prime number

The product of any natural number and the smallest prime is an even number (b) an odd number a prime number (d) None of these