A perfect square number having n digits where n is even will have square root with (a) n + 1 digit (b) n/2 digit (c) n/3 digit (d) (n + 1)/2 digit The correct answer is (b) n/2 digit Explanation Let us consider an example 36 is a perfect square and it has 2 digits Here n=2... View Article
If m is the square of a natural number n, then n is (a) the square of m (b) greater than m (c) equal to m (d) √m The correct answer is (d) √m Explanation Given that m is the square of a natural number n Hence n2 = m Then, => n = √m... View Article
3√1000 is equal to (a) 10 (b) 100 (c) 1 (d) none of these The correct answer is (a) 10 Explanation = 3√1000 = 3√(10 × 10 × 10) = 3√(103) = 10... View Article
Which of the following numbers is not a perfect cube? (a) 216 (b) 567 (c) 125 (d) 343 The correct answer is (b) 567 Explanation 216 = 6 × 6 × 6 567 = 9 × 9 × 7 125 = 5 × 5 × 5 343 = 7... View Article
A perfect square can never have the following digit in its ones place. (a) 1 (b) 8 (c) 0 (d) 6 The correct answer is (b) 8 Explanation From the properties of square we know that a number with 2, 3, 7 or 8 at unit’s place should... View Article
Which among 432, 672, 522, 592 would end with digit 1? (a) 432 (b) 672 (c) 522 (d) 592 The correct answer is (d) 592 Explanation From the properties of square we know that if a number ends with 1 or 9, then its square will... View Article
