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These 2×3×7 are prime factors of some number, find the square of that particular number.(a) 1764(b) 1664(c) 1864(d) 1964I have been asked this question in examination.My question is taken from Square Root in section Squares and Square Roots of Mathematics – Class 8

Answer»

Right CHOICE is (a) 1764

The explanation: 2 × 3 × 7 = 42. Now we need to find 42^2. When we add first 42 ODD numbers we get, 1764. THEREFORE the CORRECT answer is 1764 and the others are INCORRECT.



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