Quantitative Aptitude - Arithmetic Ability Questions

What should be added to 8(3x - ­4y) to obtain 18x ­- 18y?

Which of the following quadratic equations has equal roots?

Find out the odd word/letters/number/number pair from the given alternatives.

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 a+b+c=15 and 1a+1b+1c=71abc, then the a3+b3+c3-3abc is

The mean of marks secured by 45 students in division A of class X is 56, 40 students of division B is 52 and that of 40 students of division C is 50. Find the mean of marks of the students of three divisions of Class X.

Find the least number which when divided by 12, 15, 18 and 27 leaves remainders 10, 13, 16 and 25 respectively.

In a circle, a chord, 5√2 cm long, makes a right angle at the centre. Then the length of the radius of the circle will be