Quantitative Aptitude - Arithmetic Ability Questions

Alarms from 3 different clocks sound after every 2, 4 and 6 hours, respectively. If the clocks are startedat the same 6 time, how many times do the alarms ring together in 3 days?

A certain sum of money becomes double of itself in 15 years at a rate of simple interest. In how many years will it become 5 times of itself at the same rate of simple interest

A person purchased 10 shirts costing Rs 150 per shirt. Next day  he again purchased the shirts costing Rs 150 per shirt at a discount of Rs 30 per shirt and that day he spent a toal of Rs 1800. What is the average cost per shirt (in Rs)?

An angle is thrice its complementary angle. What is the measure of the angle?

In figure 'O' is the centre of a circle. The area of sector OAPB is 5/18. of the area of the circle find 'x'.

What is the value of (4a2 + 8b + 14c + 2)/2 ?

30% discount is offered on an item. By applying a promo code the customer wins 20% cash back. What is the effective discount?

Select the odd letters from the given alternatives.