Quantitative Aptitude - Arithmetic Ability Questions

The mean of marks secured by 30 students in division-A of class X is 67, 55 students of division-B is 63 and that of 40 students of division-C is 61. What is the mean of marks of the students of three divisions of Class X?

The mean of 10 observations is 17. One more observation is included and the new mean becomes 16. The 11th observation is

Find the least number which when divided by 20, 25, 35 and 40 leaves remainder 14, 19, 29 and 34 respectively?

Which of the following ratios can be the ratio of the sides of a right angled triangle?

Tanya got an increment of 15% in her salary. If her enhanced salary is Rs.14,030. What was her original salary?

In what ratio is the segment joining (12,­1) and (-­3,4) divided by the Y­-axis?

Divide Rs. 368 in the ratio 1:5:8:9. The rupees in the respective ratios are given by

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 given alternatives.