Quantitative Aptitude - Arithmetic Ability Questions

What is the value of [(cos 3θ + 2cos 5θ + cos 7θ)÷(cos θ + 2cos 3θ + cos 5θ)] + sin 2θ tan 3θ?

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.

In the following question, select the odd letter/letters from the given alternatives.

Geetha weighs 11.235 kg. Her sister weighs 1.4 times her weight. Find their combined weight?

Find the missing number?

3 men dig a hole in 10 days. How many days would it take for 5 men to dg the same hole?

What is the sum of the first 11 terms of an arithmetic progression if the 4th term is 11 and the 7th term is -4?

If ABCD is a trapezium, AC and BD are the diagonals intersecting each other at point O. Then AC : BD is