Basics of Number Systems

The greatest number of $5$ digit which starts from $8$ and ends with $7$ is _____

$\frac{a}{3}=\frac{b}{4}=\frac{c}{7}$ then ,$\frac{\left(a+b+c\right)}{c}$ is equal to ?

The sum of five consecutive odd numbers is $265$. What is the sum of the largest number and twice the smallest number?

111,111,111 is divisible by ,

A certain sum of money distribute among $A, B$ $C$ in such that $A$received thrice as$B$and  two and half time as $C$.$C$ Receive Rs. $4500$ More than $\mathit{B}$ Than the money of $B$ is-

Find the largest given prime number. In four consecutive prime numbers that are in descending order, the product of the first three is $2431$ and that of the last three is $1001$.

How many numbers are there between $500$and$600$ in which $9$ occurs only once?

The unit digit in$3\times 33\times 537\times 1256$ is -

A number is divisible by $4$ if its:

If all the numbers from 4 to 71 which are divisible by 4 are arranged in descending order, then which number will be at 8th place from the top ?

The natural numbers along with zero forms the collection of:

The sum of the two numbers is $20$ and their product is $75$. What is the sum of their reciprocals?

A newspaper sold for Rs. $5$ and earn $15\%$ commission. One dealer sold $1200$ copies per day, then how many Rs. he get commission in a month?

When $n$ is divided by $4$, the remainder is $3$. What is the remainder when $2n$ is divided by $4$?

The number $3$ less than $-2$ is:

How many mm represent $1 \mathrm{km}$?

Find the digit in the unit's place of the product $49237 \times 3995 \times 738 \times 83 \times 9$.

Which of the following is the maximum sum of $44,42,40$ ……?

If a quantity is divided in the ratio $3:5$, the larger part is $75$. Find the quantity.

What is $35\%$ of a number if $12$ is $15\%$ of the number?