Let the two consecutive positive integers be x and x + 1Product of two consecutive positive integers = x (x + 1)= x2 + xCase (i): x is even numberLet x = 2k⇒x2 + x = (2k)2 + 2k = 4k2 + 2k= 2k ( 2k + 1) Hence the product is divisible by 2Case (ii): x is odd numberLet x = 2k + 1⇒ x2 + x = (2k + 1)2 + (2k + 1) = 4k2 + 4k + 1 + 2k + 1= 4k2 + 6k + 2\xa0= 2 (2k2 + 3k + 1) Clearly the product is divisible by 2From the both the cases we can conclude that the product of two consecutive positive integers is divisible by 2.
Prove that the product of two consecutive positive integer is divisible by 2
Qabool Singh Gaba
Asked: 3 years ago2022-11-07T12:24:20+05:30
2022-11-07T12:24:20+05:30In: Class 10
Prove that the product of two consecutive positive integer is divisible by2
Prove that the product of two consecutive positive integer is divisible by2
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Let the 2 consecutive positive integer be x, x+1.Product of these consecutive integers be x(x+1).1. evenLet x=2kProduct = 2k(2k+1) From above equation it is clear that the product is divisible by 2.2. oddLet x=2k+1Product = (2k+1)[(2k+1)+1]From above equation it is clear that the product is divisible by 2