Quantitative Aptitude - Arithmetic Ability Questions

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

For triangle PQR, find equation of altitude PS if co-­ordinates of P, Q and R are (1,2), (2,­-1) and (0,5) respectively?

The area of a square is equal to its side, if the side is 1 unit.

HCF of two numbers is 19 and their LCM is 665. If one of the number is 95, find the other.

When a number is divided by 63 the remainder is obtained as 26. What will be the remainder when the number is divided by 3?

If a + b = 17 and a - b = 9 then the value of (4a2 + 4b2) is,

The average weight of 3 men A, B and C is 84 Kg. Another man D joins the group and the average now becomes 80 Kg. If another man E whose weight is 3 Kg more than that of D, replaces A then the average weight of B, C, D and E becomes 79 Kg. What is the weight of A?

What is the mean of the first five Triangular Numbers?