C-13-Q009mediumsingle_mcqThe second term of the sequence {nn+1}\left\{\dfrac{n}{n+1}\right\}{n+1n} is —a12\dfrac{1}{2}21b23\dfrac{2}{3}3ব্যাখ্যাSubstituting n=2n = 2n=2 into nn+1\dfrac{n}{n+1}n+1n gives 22+1=.