Find the odd word/letters/number from the given alternatives.

(A) BCE (B) WXZ (C) MNP (D) GHK

$$\begin{gathered} ∆ABC is similar to ∆PQR. If ratio of perimeters of ∆ABC and ∆PQR is 1:2 and \\ if PQ = 10 cm then what is the length of AB (in cm)? \end{gathered}$$

cos(A+B) + cos(A-B) is equal to

Dodecahedron has 20 vertices. How many edges does it have?

What is the slope of the line parallel to the line passing through the points (3 , -4) and (-2 , 5)?

∆ABC is right angled at B. BD is an altitude. AD = 4 cm and DC = 9 cm. What is the value of BD (in cm)?

At what point does the line 2x - 3y = 6 cuts the X axis?

The 5th and 9th term of an arithmetic progression are 7 and 13 respectively. What is the 15th term?

Aniruddh's birthday is on Sunday 2nd April. On what day of the week will be Priyansh's Birthday in the same year if Priyansh was born on 28th October?