Find the total number of integer `n` such that `2lt=nlt=2000` and H.C.F. of `n` and 36 is 1.

Find the number of positive integers n.such that sqrt(n)+sqrt(n+1)<11

The sum of all natural number 'n' such that 100 lt n lt 200 and H.C.F. (91, n) gt 1 is

Find the number of positive integers n such that 105 is a divisor of n^2+n+1.

The sum of all natural numbers 'n' such that 100 lt n lt 200 and HCF (91, n) gt 1 is

Find number of integers n such that n^(4)-n^(2)+64 is the square of an integer.

Find the number of integers n for which (n)/(20-n) is the square of an integer.

Find the total number of sigma bonds in H_(n)P_(n)O_(3m), where ngt2 is :

Find the total number of correct orders among the following. (a) Order of electron affinity : S gt O^(-) (b) Order of ionic radius: AI^(3+) lt Mg^(2+) lt O^(2-) (c) Order of electronegativity: Si lt P lt C lt N (d) Order of atomic radius: O lt C lt S lt Se (e) Order of second ionization energy: C lt N lt F lt O (f) Order of ionic radii : S^(2-) lt CI^(-) lt K^(+) lt Ca^(2+)