Quantitative Aptitude - Arithmetic Ability Questions

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.

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

Select the odd number from the given alternatives.

A man misses a train by 1 hour if he travels at a speed of 4 kmph. If he had increased his speed to 5 kmph, he would gave still missed the train by 24 minutes. At what speed should he have travelled so that he reached the station exactly on time?

Calculate the distance (in cm) of the chord from the centre of the circle, if the chord of length 48 cm is drawn in the circle of radius 25 cm.

A wholesaler purchased 7 hair clips for a rupee. How many for a rupee must he sell to get profit of 40%.

On dividing a certain number by 342 we get 47 as remainder. If the same number is divided by 18, what will be the remainder ?

What is the equation of the line if its slope is ­2/5 and y-­intercept is 6?