Quantitative Aptitude - Arithmetic Ability Questions

If (a+1a)2=3,then the value of a6-1a6 will be

Find the sum of the measures all the exterior angles of a decagon.

The  sum  of  three  prime  numbers  is  100.  If  one  of  them  exceeds  another  by  36,  then  one  of  the numbers is

The order of rotational symmetry of a rectangle is

How many numbers are there from 300 to 650 which are completely divisible by both 5 and 7?

ΔABC is right angled at B. If cotA = 7/24, then what is the value of cosecC ?

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

Two trains are moving in opposite directions with the same speed. If the length of each train is 120 metres and they cross each other in 12 seconds, then what is the speed (in km/hr) of each train?