Question 2 :
$20x3$ is a multiple of 3 if the digit $x$ is _ or _ or _.
Question 3 :
The number $ab-ba$ where $a$ and $b$ are digits and $a>b$ is divisible by
Question 4 :
If $\stackrel{\underline{\begin{matrix}&A&B\\-&B&7\end{matrix}}}{\underline{\ \ \begin{matrix}&4&5\end{matrix}}}$ , find the value of A and B.
Question 5 :
Find the value of A and B if $\stackrel{\underline{\begin{matrix}&&&\\&4&1&A\\+&&B&4\end{matrix}}}{\ \ \begin{matrix}&5&1&2\end{matrix}}$
Question 8 :
By what number should 12345679 be multiplied to get 999999999 ?
Question 10 :
If the division $\frac{N}{5}$ leaves a remainder of 1, what might be the one's digit of N?
Question 11 :
If the division $\frac{N}{2}$ leaves a remainder of 1, what might be the one's digit of N?
Question 14 :
If $\stackrel{\underline{\begin{matrix}&A&B\\\times&A&B\end{matrix}}}{\underline{\begin{matrix}6&A&B\end{matrix}}}$ , then find the valur of A and B.
Question 15 :
If 1AB + CCA = 697 and there is no carry-over in addition, find the value of A + B + C.
Question 16 :
State true or False. If $abc$, $cab$ and $bca$ are three digits numbers formed by the digits $a$, $b$ and $c$, then the sum of these numbers is always divisible by 37.
Question 20 :
What would be the value of y, if $277y$ is divisible by 11 ?
Question 21 :
If the sum of digits of a number is divisible by three, then the number is always divisible by
Question 22 :
If 148101B095 is divisible by 33, find the value of B.
Question 23 :
Check what the result would have been if Minakshi had chosen 901. In each case keep a record of the quotient obtained at the end.