The number of perfect square numbers between 50 and 1000 is = ?

A man born in the first half of the nineteenth century was x years old in the year. He was born in ?

R is a positive number. It is multiplied by 8 and then squared. The square is now divided by 4 and the square root is taken. The result of the square root is Q. What is the value of Q ?

The smallest natural number which is a perfect square and which ends in 3 identical digits lies between ?

If the product of four consecutive natural numbers increased by a natural number p, is a perfect square, then the value of p is = ?

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