([c,c),1997],[128,(80)^(2)-(65)^(2)+81,=?],[(a),306]

64a^(2)+25b^(2)+80ab-49c^(2)

(80)^2-(65)^2+81=? 306 (b) 2094 (c) 2175 (d) 2256 None of these

Find the value of 1/(81^n)-(10)/(81^n)^(2n)C_1+(10^2)/(81^n)^(2n)C_2-(10^3)/(81^n)^(2n)C_3++(10^(2n))/(81^n) .

Find the value of 1/(81^n)-(10)/(81^n)^(2n)C_1+(10^2)/(81^n)^(2n)C_2-(10^3)/(81^n)^(2n)C_3++(10^(2n))/(81^n)

The vertices of a triangle are A(1,-1,2) ,B(6,11,2),C(1,2,6) then cos A= (A) (63)/(65) (B) (36)/(65) (C) (16)/(65) (D) (13)/(65)

(999)^(2)-(998)^(2)=?1992(b)1995(c)1997 (d) 1998

Find the value of (1)/(81^(n))-(10)/(81^(n))^(2n)C_(1)+(10^(2))/(81^(n))^(2n)C_(2)-(10^(3))/(81^(n))^(2n)C_(3)+...+(10^(2n))/(81^(n))

Factorise : a^(2)-81(b-c)^(2)

The boiling point of C_(6)H_(6), CH_(3)OH, C_(6)H_(5)NH_(2) and C_(6)H_(5)NO_(2) are 80^(@)C, 65^@ C ,184^@ C and 212^(@)C respectively. Which will show highest vapour pressure at room temerature:

The boiling point of C_(6)H_(6), CH_(3)OH, C_(6)H_(5)NH_(2) and C_(6)H_(5)NO_(2) are 80^(@)C, 65^@ C ,184^@ C and 212^(@)C respectively. Which will show highest vapour pressure at room temerature: