Quantitative Aptitude - Arithmetic Ability Questions

Which instrument is used for viewing the sun?

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.

If the diameter of the two circles is 6 units and 10 units and a centre distance of 8 units. Calculate the number of common tangents that can be drawn to both the circle.

Which is the correct ascending order of the given numbers?

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 someLogic/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, 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.

Find the least number that must be subtracted from 98534, to get a number exactly divisible by 824.

What is the fraction which, when taken away from 1/2, gives 2/3?