Solve the cryptarithm: ` O N + O N + O N =\ G O `

Solve the cryptarithm: O N +\ O N = G O

Solve the cryptarithm : O N +\ O N + O N + O N = G O

In Figure, lines A B ,\ C D\ a n d\ E F intersect at O . Find the measures of /_A O C ,\ /_C O F ,\ /_D O E\ a n d\ /_B O F .

If O\ a n d\ O^(prime) are circumcentre and orthocentre of \ A B C ,\ t h e n\ vec O A+ vec O B+ vec O C equals a. 2 vec O O ' b. vec O O ' c. vec O ' O d. 2 vec O ' O

Let G_1, G_2a n dG_3 be the centroids of the triangular faces O B C ,O C Aa n dO A B , respectively, of a tetrahedron O A B Cdot If V_1 denotes the volumes of the tetrahedron O A B Ca n dV_2 that of the parallelepiped with O G_1,O G_2a n dO G_3 as three concurrent edges, then prove that 4V_1=9V_2dot

In Figure, O P ,\ O Q ,\ O R\ a n d\ O S are four rays. Prove that /_P O Q+\ /_Q O R+\ /_S O R+\ /_P O S=360^0

In figure, A B\ a n d\ C D are straight lines and O P\ a n d\ O Q are respectively the bisectors of angles /_B O D\ a n d\ /_A O C . Show that the rays O P\ a n d\ O Q are in the same line.

By completing the following structures, adding unshared e^(-) pairs when necessary calculate the charges (a) N -= C - -=N CI - C-=N [O-underset(O)underset(||)overset(O)overset(||)(CI)-O]^(Theta .

For the reaction R- Br to R- O - N =O the suitable reagent is