1) Which of the following numbers when rounded off to the nearest thousand does not become 423 000? a) 422 516 b) 422 871 c) 423 408 d) 423 501 2) Five hundred six thousand and two written in numerals is a) 56 002 b) 506 002 c) 560 002 d) 5 060 002 3) Find the lowest common multiple (LCM) of 10, 12 and 21? a) 120 b) 140 c) 210 d) 420

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