Quantitative Aptitude - Arithmetic Ability Questions

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

Which of the following equations has real and distinct roots?

ΔABC is right angled at B. If m ∠A = 60°, then what is the value of 1/√3 Cosec C?

A bag contains coins of denominations Rs.1, Rs.5 and Rs.10. Assuming there are equal number of Rs.1, Rs.5 and Rs.10, what will be the total number of coins in the bag be if the total money is Rs. 368?

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

The ratio of two numbers is 5 : 6. If their product is 1470, then what is the sum of both the numbers?

ABCD is a quadrilateral with AB = 9 cm, BC = 40 cm, CD = 28 cm, DA = 15 cm and angle ABC is a right –angel. 
What is the area of triangle ADC?

ΔXYZ is similar to ΔPQR. If ratio of Perimeter of ΔXYZ and Perimeter of ΔPQR is 4:9 and if PQ = 27 cm, then what is the length of XY (in cm)?