Quantitative Aptitude - Arithmetic Ability Questions

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

Two labourers A and B are paid a total of Rs 650 per day. If A is paid 160 percent of what is paid to B, how much (in Rs) is B paid?

The slopes of two lines are 1/√3 and √3. What is the angle between these two lines?

If the shopkeeper sells an item at Rs 4400 which is marked as Rs 5000, then what is the discount that he is offering?

In the following question, select the odd number group from the given alternatives.

If a - b = -1 and ab = 6, then what is the value of a3- b3?

A man starts moving from a place A and reaches the place B in 26 hours. He covers 1/3rd of the distance at the speed of 4 km/hr and covers the remaining distance at the speed of 5 km/hr. What is the distance (in km) between A and B?

If the profit is 20%, then what will be the ratio of cost price to selling price respectively?