how to answer these two questions

how to answer these two questions a + ab+b (f) 32 (2) 28 (3) .20 7. The dimensions of a rectangular hall are 600 cm x 450 crn. What would be length of the longest tape (in cm) that can be used to measure the and 8. breadth of the hail exactly? (2) 200 (1) 100 Find the value Of 1+2012 1+2013 (3) so (3) 2017 -I-so 2013 (1) 2015 (2) 2016 The smallest integer, x (> 1) divides the positive . Then be alan (1) composite number. (2) even number

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