Quantitative Aptitude - Arithmetic Ability Questions

If tan a = √3 + 2, then the value of tan a - cot a is

Average age of 6 boys is 14 years. Average age of 11 girls is 12 years. What is the average age (in years) of all boys and girls?

The mean of marks secured by 35 students in division A of class X is 65, 45 students of division B is 61 and that of 70 students of division C is 59. What is the mean of marks of the students of three divisions of Class X?

Dodecahedron has 30 edges. How many vertices does it have?

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

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the

The measures of the three angles of a triangle are in the ratio 1:2:3. What is the measure of the biggest angle?

The S.P of a washing machine is 1 1/3 of its C.P. Find the gain percent.