A) 4
B) 6
C) 8
D) 9
Correct Answer: C
Solution :
[c] Let \[m=2k+1,\,\,\,n=2k-1(k\in N)\] \[\therefore \,\,\,\,{{m}^{2}}-{{n}^{2}}=4{{k}^{2}}+1+4k-4{{k}^{2}}+4k-1=8k\] Hence, all the numbers of the form \[{{m}^{2}}-{{n}^{2}}\] are always divisible by 8.You need to login to perform this action.
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