Quantitative Aptitude - Arithmetic Ability Questions

ax + 5y = 8 has slope of -4/3. What is the value of a?

What is the value of 13×7+17×11+111×15+...+1899×903 ?

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.

In the following question, select the odd word from the given alternatives.

The average of 8 consecutive integers is 23/2. What is the average of first three integers?

If cos -225° = x, then the value of x is

What is the value of a-b when a2+b2-6a-6b+18 = 0 ?

Simplify 81x2 - 49y29x + 7y