The additive identity element in the set of integers is
(a) `1`
(b) `-1`
(c) `0`
(d) none of these

What is the additive identity element in the set of whole numbers? (a) 0 (b) -1 (c) 1 (d) None of these

What is the multiplicative identity element in the set of whole numbers? (a) 0 (b) -1 (c) 1 (d) None of these

The predecessor of 1 in whole number is (a)0 (b) -1 (c) 2 (d) None of these

If B: {z: |z-3-4i|}=5 and C={z:Re[(3+4i)z]=0} then the number of elements in the set B intesection C is (A) 0 (B) 1 (C) 2 (D) none of these

The smallest natural number is (a) 0 (b) 1 (c) -1 (d) None of these

The function x^x decreases in the interval (a) (0,e) (b) (0,1) (c) (0,1/e) (d) none of these

int_(-1)^2[([x])/(1+x^2)]dx ,w h e r e[dot] denotes the greater integer function, is equal to (a) -2 (b) -1 (c) 0 (d) none of these

The predecessor of 1 in natural number is 0 (b) 2 (c) -1 (d) None of these

prod_(i=1)^89 tan i^@= (a) 0 (b) 1 (c) oo (d) none of these

The value of 3/(25) is (a)1.2 (b) 0.12 (c) 0.012 (d) None of these