Quantitative Aptitude - Arithmetic Ability Questions

The average marks obtained by a group of 10 students were 20. One student left the group as a result of which the average of the remaining students rose to 21. But another student joined, as a result of which the average marks of the group dropped a bit and became 20.6. What were the average marks obtained by the student who left and the one who joined?

The length of one side of a rhombus is 13 cm and one of the diagonals is 10 cm. What is the legth of the other diagonal?

What is the ratio of radius of incircle and circumcircle for an equilateral triangle with an area of 22√3 sq. units?

The HCF of 24, 60 and 90 is:

If 22, x, 88 are in a continued proportion, find the value of x.

What is the value of (4/3) cot2 (p/6) + 3 cos2 (150) – 4 cosec2 45 + 8 sin (p/2)?

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

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