Quantitative Aptitude - Arithmetic Ability Questions

Find the HCF & LCM of 16, 24.

For triangle PQR, find equation of altitude PS if co­-ordinates of P, Q and R are (6,2), (0,3) and (­-4,5) respectively?

If a2+1a2 = 38, then find the value of a-1a?

If 5x + 5 > 2 + 2x and 5x + 3 ≤ 4x + 5; then x can take which of the following values?

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

In a Rhombus ABCD, measure of angle CAB is 25°, what is the measure of angle ABC?

The mean of the 5 smallest numbers from a group is 15 while the mean of all the 13 members of the group taken together is 17. What is the mean of the 8 largest numbers?

The value of tan80° tan10° + sin270° + sin20∘