What was the achievement of Dobereiner’s

A number n when divided by 6, leaves a remainder 3. What will be the remainder when (n² + 5n + 8) is divided by 6?

Find the quotient of 0.36 ÷ 0.48 (correct to three decimal places).

If '5731x7' is a six-digit number which is divisible by 33, then calculate the value of 'x'.

If a number 'a' is divisible by 18 and another number 'b' is divisible by 12, then (a² – b²) is divisible by:

On dividing a certain number by 304, we get 43 as the remainder. If the same number is divided by 16, what will be the remainder?

The least perfect square number which is divisible by 9, 12, 15, 24:

What will be the remainder when 7⁴² is divided by 48?

How many divisors does the number 5040 have?

How many factors of 2³ × 3³ × 5⁴ × 7³ are divisible by 50 but not by 100.