(251+ 252+ 253+ 254 + 255) is divisible by

The difference between the greatest and least five-digit numbers formed by the digits 2,5,0,6,8 is (repetition of digits are not allowed)

The least number that must be subtracted from 63520 to make the result a perfect square is

If the sum of three consecutive numbers is 15, what is the square of the middle number?

If sin θ = √3/2 and 0° < θ < 90°, then the value of tan(θ - 15°) is?

Find the remainder: \( (17^{13} - 21) \div 18 \).

The product of two positive integers is 2048 and one of them is twice the other. Then the smaller of the number is

then x is equal to

Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(5, 5, 25)
(2, 5, 10)

What is the value of 1 ² + 2 ² + 3 ² + ......21 ² ?

Which sequence is correct to represent the hierarchical chain of number system?

(Where N - Natural Numbers

W - Whole Numbers

Q - Rational Numbers

Z - Integers)

What must be added to 45680 to make it exactly divisible by 9?

How many zeroes are there at the end of the following product? 

1 x 5 x 10 x 15 x 20 x 25 x 30 x 35 x 40 x 45 x 50 x 55 x 60