Quantitative Aptitude - Arithmetic Ability Questions

A shopkeeper offers the following 3 schemes. Which scheme has the lowest discount percentage (all articles have same marked price)?

I. Two successive discounts of 10% and 10%

II. Buy 7 get 8

III. Buy 9 get 1 free

If 3x^2 + ax + 4 is perectly divisible by x - 5, then the value of a is :

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 16854, and Rs 17865.24 respectively, what is the rate of interest?

If 7x - [3(2x - 3)]/2 = 1/2, then what is the value of x?

What is the value of [tan (90 – A) + cot (90 – A)]2/[2 sec2(90 – 2A)]?

What is the reflection of the point (2, 3) in the line y = 4?

The LCM of two numbers is 66. The numbers are in the ratio 2:3. The sum of the numbers is

Find out the odd word/letters/number/number pair from the given alternatives.