1.

The product of two consecutive even numbers is 5328. What is the smaller number?(a) 70 (b) 68(c) 74 (d) 72(e) None of these

Answer»

(d) Let the smaller number be x 

x (x + 2) = 5358 

x2 + 2x – 5328 = 0

(x + 74) (x – 42) = 0 

x = 72 



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