Which of the following is not a vector

Choose the set in which the numbers are related in the same way as the numbers in the following sets.

Identify the number that does NOT belong to the following series.

46, 54, 81, 145, 270, 480

Which two numbers (not digits) should be interchanged to make the given equation correct?

(18 × 2) – 24 + 10 × 160 ÷ 16 + (10 × 4) = 170

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

(12÷ 3) × 18 - 2× 4 + 42÷ 6 = 69

In the data set given below, what is the difference between the Median and the Mode?

{2.1, 5, 6, 7, 8, 9.3,11,15, 17, 19.21, 27, 31, 31, 33, 16.5, 14, 10}

If 

x + y means x is a brother of y 

x – y means x is a daughter of y 

x × y means x is a sister of y 

Which one of the following images numbered as (1), (2), (3), (4) will be the next image for the given series?

If '+' means '÷' , '–' means '+' , '×' means '–' and '÷' means '×', then what will come in place of (?) in the given equation?

What is the code for ‘many?