Which lake is often referred to as the "Lake of Seven

Answer these questions based on the following information.

There are 4 red balls, 4 green balls and 6 blue balls, in a box

 In a certain code language,

A + B means ‘A is the son of B’,

A − B means ‘A is the sister of B’,

Which of the following numbers will replace the question mark (?) in the given series?

68, 77, 89, 105, ?, 153

If POSITIVE is coded as OPISITEV in a certain coded language, then how will be MODERATE coded in that language?

Select the correct option that indicates the arrangement of the given words in the order in which they appear in an English dictionary.

Four letter-clusters have been given out of which three are alike in some manner and one is different. Select the odd one.

Select a unique number for each letter in the following table according to which a meaningful word will be formed when the letters are arranged. 

Which two numbers should be interchanged to make the given equation correct?

700 + 42 ÷ 6 × 45 – 54 × 9 + 14 = 355