`3. 27 ` is (a) an integer (b) a rational number (c) a natural number (d) an irrational number

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

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

Every point on a number line is represented as: (a) a unique real umber (b) a natural number (c) a rational number (d) an irrational number

If f(x)=cosx+cosa x is periodic function, then a must be (a)an integer (b) a rational number (c)an irrational number (d) an even number

Sum of two natural numbers is a rational number.

The number 0. 318564318564318564... is: (a) natural number (b) an integer (c) rational number (d) an irrational number

Give an example of each, of two irrational numbers whose: (i) difference is a rational number. (ii) difference is an irrational number. (iii) sum is a rational number. (iv) sum is an irrational number. (v) product is a rational number. (vi) product is an irrational number. (vii) quotient is a rational number. (viii) quotient is an irrational number.

The solution of the equation 7^(logx)-5^(logx+1)=3*5^(logx-1)-13*7 ^(logx-1)is (a) an even number (b) rational number (c) irrational number (d) composite number

Show that every natural number is a positive rational number.

Which of the following is a correct statement? (A)Sum of two irrational numbers is always irrational (B) Sum of a rational and irrational number is always an irrational number (C)Square of an irrational number is always an irrational number (D) Sum of two rational numbers can never be an integer