Answer: Option D. -> 22
:
D
If we look carefully, the pattern is:
4-2 = 2
7-4 = 3
11 -7= 4
16 - 11 = 5
Thus, the differences between the consecutive members of the pattern themselves form a pattern - 2, 3, 4 and 5.
Thus, the next member of the pattern would be obtained by adding 6 to the previous member, 16.
16 + 6 = 22
Thus, the missing number is 22.

Answer: Option A. -> 4
:
A
The smallest 5-digit number is 10000. There are 4 zeros in 10000.

Answer: Option D. -> 3300 km
:
D
When we round off a number to the nearest 100, we checkthe last two digits of the number. If the last two digits form a numberless than 50, we round down the number to the nearest lower multiple of 100.If the last two digits form50 or morethan 50, we round upthe number to the nearest highermultiple of 100.
Since the number 3255 has to be rounded off to the nearest hundred, our options are 3200 or 3300. 55 >50.
Hence the length of River Ganga when rounded off to the nearest hundred will be 3300 km.

Answer: Option B. -> False
:
B
In the Roman Numeralsystem, the symbol for zero does not exist.

Answer: Option C. -> 7650
:
C
To findthe greatest number that can be created from the given digits, we need to arrange the digits in descending order.
In this case, we have7 > 6 > 5 > 0.
Thus, the greatest number that can be formed from the given digits is7650.

:
The symbol for 500 in roman numerals is D.

Answer: Option D. -> 31000
:
D
To round off a number to the nearest hundred, we checkthe last two digits of the number.
If the last two digits form a numberless than 50, we round down the number to the nearest lower multiple of 100.
If the last two digits form50 or morethan 50, we round upthe number to the nearest highermultiple of 100.
To round off30982 to the nearest hundred, our options are either 30900 or 31000.
Since82 is greater than 50, 30982 isrounded off to 31000.

Answer: Option C. -> 9
:
C
From the digits given, the numbers that Meera has in her hand are 508, 558, 598 and 588.
$\begin{array}{cc}\text{Number}& \text{Number of tens}\\ 5\underset{–}{0}8& 0\\ 5\underset{–}{5}8& 5\\ 5\underset{–}{9}8& 9\\ 5\underset{–}{8}8& 8\end{array}$
Greater the number of tens, greater the number.
Thus, the largest number from 508, 558, 598 and 588 is 598.
Thus, Meera has to choose the digit 9 to get the largest number from the given options.

Answer: Option C. -> 3402
:
C
Given that
One cube represents one.
Now, there are 3 cubes in thousands = 3000
There are 4 cubes in hundreds = 400
There are no cubes in tens.
There are two cubes in ones = 2
Hence, the number represented by the diagram = 3000 + 400 + 2 = 3402

Answer: Option A. -> 999998
:
A
The largest 6 digit even number is 999998. Numbers that end with 0, 2, 4, 6 and 8 are called even numbers.
999998 > 999996.