Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd word pair from the given alternatives.

If 3√7 + √343 = 19.21, then find the value of √252 + 20√7.

The LCM of 48 and 54 is

The total surface area of a cube is 337.5 cm². Find its side (in cm).

The average of 12 numbers is 9. If each number is multiplied by 2 and added to 3, the average of the new set of numbers is

If an interior of a regular polygon is 170o, then the number of sides of the polygon is

In what ratio wheat costing Rs 17/kg mixed with another wheat costing Rs 12/kg to get a mixture costing Rs 13.5/ kg?

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?