For the following questions answer them individually
In the following number series, two numbers have been put within brackets. Select the most appropriate option for these numbers in relation to their inclusion in the series.
1, 9, 25, 49, (81), 121, 169, (215), 289
Three of the following four letter-clusters are alike in a certain way and one is different. Find the odd one out.
Select the option that is related to the third number in the same way as the second number is related to the first number.
13 : 84.5 :: 20 : ......
Three of the following four number-pairs are alike in a certain way and one is difierent. Identify the diflerent one.
Select the Venn diagram that best illustrates the relationship between the following three classes.
Stationery, Pencil, Apple
Which of the following interchanges of signs and numbers would make the given equation correct?
$$18 - 3 \div 6 + 24 \times 12 = 48$$