Quantitative Aptitude - Arithmetic Ability Questions

A number is greater than five times its reciprocal by 19/2. Find the number.

In a triangle XYZ , which of the following conditions is true

874.96 + 94.0091 × 34.98 –1244.98 = ?

ΔABC is similar to ΔPQR. If ratio of perimeter of ΔABC : perimeter of ΔPQR is 5:9 and if PQ = 45 cm, then the length of AB (in cm) is?

If P = 7 + 4√3 and PQ = 1, then what is the value of 1/P2 + 1/Q2?

A boat goes 8 km upstream and 12 km downstream in 7hours. It goes 9 km upstream and 18 km downstream in 9 hours. What is the speed (in km/h) of the boat in still water?

If a = 1/a-5, then the value of a + 1/a = ?

If (4a-3)2=0,then the value of 64a3+12a+13 is