The number of students in a university is a perfect square. In one year 2000 more students joined the original strength and the new strength is one more than a perfect square. the next year 2000 more students joined newly and the new strength of the university is again a perfect square.
what is the sum of all the digits of square of 99999... up to 15- digits?
how many perfect squares of natural numbers between 30,000-50,000 are there whose last two digits end with 81?
Harry, Hermione, and Ron are playing together with at most 40 marbles in total. All at the same time Harry passed one-third of his marbles to Hermione, Hermione passed one-fourth of her marbles to Ron and Ron passed one-fifth of his marbles to Harry. They all gave more than one marble. After this, they each had equal number of marbles. How many marbles in total could they have started with?
A. 30 B. 33 C. 36 D. 39
Find x such that |x + a| - |x - b| > 0 where a < b.
x > b
x < (b - a)/2
x > (b - a)/2
None of these