The product 2 x 3 x 7 x 11 x 23 equals:
A10626
B5313
C1771
D21252
Answer & Solution
Correct answer: A. 10626
1. Multiply in stages to keep the arithmetic clean.
2. 7 x 11 = 77, and 77 x 23 = 1771.
3. Now bring in the remaining factors: 2 x 3 = 6.
4. So the product is 6 x 1771 = 10626.
5. 1771 is only the last three factors, and 5313 is 3 x 1771, so both are partial products.
_Source: NCERT Class 10 Maths, Ch 1 'Real Numbers', S1.2 The Fundamental Theorem of Arithmetic_
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