How many diagonals does a convex quadrilateral have?
A convex quadrilateral has two diagonals.
A convex quadrilateral has two diagonals.
The inverse of a symmetric matrix is symmetric.
2x5 is the monomial of degree 5.
A line intersecting a circle in two points is called a secant line.
(3 / 5) × (2 / 2) = (3 × 2) / (5 × 2) = 6 / 10 (3... View Article
The predecessor of 10000 is (10000 − 1) = 9999.
5 (x – 1) + 2 (x + 3) + 6 = 0 5x – 5 + 2x + 6... View Article
The given expression is \(\begin{array}{l}\left(\frac{a}{4}-\frac{b}{2}+1\right)^{2}\\ \text { The suitable identity is }(x+y+z)^{2}=x^{2}+y^{2}+z^{2}+2 x y+2 y z+2 x z\\ \left(\frac{a}{4}-\frac{b}{2}+1\right)^{2}\\ =\left(\frac{a}{4}\right)^{2}+2\left(-\frac{b}{2}\right)^{2}+(1)^{2}+2\left(\frac{a}{4}\right)\left(-\frac{b}{2}\right)+2\left(-\frac{b}{2}\right)(1)+2\left(\frac{a}{4}\right)(1)\\... View Article
The given expression is \(\begin{array}{l}\left(\cos 45^{\circ}\right) /\left(\sec 30^{\circ}+{cosec} 30^{\circ}\right) \\ =\frac{\frac{1}{\sqrt{2}}}{\frac{2}{\sqrt{3}}+2}=\frac{\frac{1}{\sqrt{2}}}{\frac{2+2 \sqrt{3}}{\sqrt{3}}} \\ =\frac{\sqrt{3}}{\sqrt{2}(2+2 \sqrt{3})}=\frac{\sqrt{3}}{2 \sqrt{2}+2 \sqrt{6}} \\ =\frac{\sqrt{3}(2 \sqrt{6}-2... View Article
The unit of plane angle is the radian.
log 1 = 0 log 2 = 0.3010 log 3 = 0.477 log 1 + log 2 + log 3... View Article
Consider the given expression. \(\begin{array}{l}\frac{3+2 i}{2-5 i}+\frac{3-2 i}{2+5 i}\\ =\frac{(3+2 i)(2+5 i)+(3-2 i)(2-5 i)}{(2-5 i)(2+5 i)}\\ =\frac{-4+19 \mathbf{i}+(-4-19 i)}{4+25}\\ =\frac{-8}{29}\\... View Article
200 [30 – {15 – (3 * 4)}] = 200 * [30 – {15 – (3 * 4)}] = 200... View Article
5 / 4 = 1 (1 / 4)
24 = 1 x 24 = 2 x 12 = 3 x 8 = 4 x 6 = 6 x... View Article
The coefficient of x in the expression 4x + 3y is 4.
(A) 18 (B) 19 (C) 20 (D) 21 Correct Answer: Option (D) 21. Besides Hindi, there are 21 other languages,... View Article
(A) Mean (B) Median (C) Mode (D) None of these Correct Answer: Option (D) None of these Mean, median and... View Article
The service which helps in removing hindrance of exchange is “Banking”. The amount required to acquire assets and meeting the... View Article
The service which helps in removing hindrance of risk is “Insurance”. The risk of damage or loss to the machinery,... View Article