Question Text
Question 1 :
Are the following statements true or false? Given reasons for your answer.<br>Every integer is a whole number.
Question 4 :
Find the missing term in the followinng sequence.$12, ?, 168, 504, 1260, 2520$
Question 7 :
Find two consecutive positive integers, sum of whose squares is 613.
Question 9 :
 Let n and k be positive integers and  S be a set of n points in the plane such that (a) no three points of S are collinear, and  (b) for every point P of S there are at least k points of S equidistant from P. Prove that $\displaystyle k< \frac{1}{2}+\sqrt{2.n.}$
Question 11 :
State whether the following statement is True or False.<br>The whole number $13$ lies between $11$ and $12$.<br>
Question 12 :
The value of $(147 + 0) + (123 + 0)$ is
Question 14 :
For any integer $'a'$, the value of $a + 0 =$ $.....$
Question 15 :
On a vertical number line positive numbers are placed ____ $0$
Question 16 :
Select the correct order for defining the following terms:<br>I - natural number<br>II -imaginary number<br>III -rational number<br>IV -integer
Question 17 :
What is the multiplicative identity element in the set of whole numbers?
Question 18 :
$n^2+n+1$ is a or an ______ number for all $n\in N$