Quantitative Aptitude - Arithmetic Ability Questions

Two students appeared for an examination. One of them secured 9 marks more than the other and his marks were 56% of the sum of their marks. The marks obtained by them are

 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 aLogic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives

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

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

If x2+y2+z2-8x+6y-4z+29 = 0, then find the value of z(x+y).

If the value 5 = 2.236,then calculate the value of 405 - 1280-125

In what ratio is the segment joining (12,­1) and (-­3,4) divided by the Y­-axis?

What should be the missing digit so that the number 275_476 becomes exactly divisible by 11?