Classification of Numbers

Consider all those two-digit positive integers less than $50$, which when divided by $4$yield unity as remainder. What is their sum?

The number $\sqrt{0.0001}$ is:

Which natural number has no predecessor?

Write the successor of the greatest $5$-digit number. 

If the sum of two consecutive even numbers is $66$, then the smaller one is?

The sum of a natural number and its square equals the product of the first three prime numbers. The number is

Sum of two different positive integers is $11$ and the sum of their squares is $61$. What is the ratio of larger integer to the smaller integer?<

In writing all the integers from $1$ to $300$, how many times is the digit $1$ used?

Four bells ring at the intervals of $5, 6, 8, 9$ seconds respectively. All the bells ring simultaneously at some time. They will again ring simultaneously after:

Which of the following numbers is prime?

Arrange the numbers in descending order:

$2\sqrt{11}, 4\sqrt{3}, 3\sqrt{5}, 5\sqrt{2}$

The sum of three consecutive even numbers is $42$. Find the middle number.

Find the sum of the squares of the first $24$ natural numbers.

Out of six consecutive integers, if the sum of first three is $66,$ what is the sum of the remaining three numbers?

If x is a natural number ,then the largest number dividing  \( (x^3- x) \) is-

The average of four consecutive even numbers A, B, C and D is 37. What is the product of A and C?

The average of $5$ consecutive even numbers $P, Q, R, S$ and $T$ is $106$.What is the product of $Q$ and $S$?

The sum of two consecutive even numbers is same as the thrice the difference between two numbers. Find the product of numbers.

Find the median of the prime numbers between $1$ to $55.$

Find the median of the prime number between $1$to $55$.