Quantitative Aptitude - Arithmetic Ability Questions

In the given figure, from the point P two tangents PA and PB are drawn to a circle with centre Oand radius 5 cm. From the point O, OC and OD are drawn parallel to PA and PB respectively. If the length of the chord ABis 5 cm, then what is the value (in deg) of COD?

If 1/6 of x - 7/2 of 3/7 equals - 7/4, then the value of x is

In the following question, select the odd letter/letters from the given alternatives.

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

Choose the odd word/letters/number/number pair from the given alternatives.

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

What is the reflection of the point (3,-5) in the origin?

If xy+yz+zx = 1, then the value of (1+y2)(x+y)(y+z) ?