Quantitative Aptitude - Arithmetic Ability Questions

What is the simplified value of (cos4 A – sin4 A)?

Findout the odd word/letters/number/number pair from the given alternatives.

The bus fare between two cities is increased in the ratio 11:18. What would be the increase in the fare, if the original fare is Rs 550?

In what ratio is the segment joining the points (2,5) and (­6,­10) divided by the y­axis?

If two marbles are picked at random, what is the probability that either both are red or both are green?

Wheat costing Rs 30/kg, Rs 35/kg and a third variety of wheat are mixed in the ratio of 3 : 4 : 2. If the mixture is costs Rs 34/kg, then what will be the cost (in Rs/kg) of the third variety of wheat?

A and B can together do a piece of work in 6 days and A alone can do it in 9 days. The number of days B will take to do it alone is

Sharmi starts from Pune and Ritesh starts from Mumbai to meet each other. The Speed of Sharmi is 37 kmph, while the speed of Ritesh is 41 kmph. If the distance between Pune and Mumbai be 234 km and both Sharmi and Ritesh start their journey at the same time, when they will meet?