The simplified value of

• 2

• 
• 
• 

The value of

• 0.024

• 0.24

• 2.4

• 2.4

The value of 204 x 197 is

• 40188

• 40212

• 39812

• 39812

If  the value of 

• 1

• -1

• 0

• 0

Instead of multiplying by 25, a student multiplies that number by 52 and gets 324 more than the correct answer. Then that number is

• 15

• 12

• 25

• 25

Simplify;

The value of

• 2

• 0

• 4

• 4

18.

In a farm there are cows and hens. If heads are counted they are 180, if legs are counted are 420. The number of cows in the farm is

• 130

• 150

• 50

• 50

The value of (11111)² is

• 12344321

• 121212121

• 123454321

• 123454321

If 
and 
then among the following the relation between m and n holds is

• m - n + 1 = 0

• m + n - 1 = 0

• m + n + 1 = 0

• m + n + 1 = 0