Quantitative Aptitude - Arithmetic Ability Questions

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

If cosecA - cotA = x, then the value of x is

Simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs. 16000 for 2 years at 10% per annum. The sum placed on simple interest is:

Δ ABC is right angled at B. If m∠A = 60°, then what is the value of sec C.sin A?

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

If 2+aa + 2+bb + 2+cc = 4, then the value of ab+bc+caabc is

What is the value of sin (B – C) cos (A – D) + sin (A – B) cos (C – D) + sin (C – A) cos (B – D)?

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