Which of the following is perfect square?

A. 12

B. 38

C. 49

D. Both a and b

If, 𝑎+𝑏=4 𝑎𝑛𝑑 𝑎−𝑏=2 𝑡ℎ𝑒𝑛,𝑓𝑖𝑛𝑑 𝑡ℎ𝑒 𝑣𝑎𝑙𝑢𝑒 𝑜𝑓 𝑎= ?

A. 3

Which of the following can not be the sum of two prime integers?

A. 7

B. 31

C. 19

D. 23

If, 𝑥+8=4 ,𝑡ℎ𝑒𝑛 𝑥+4= ?

A. 0

Find the perimeter of a rectangle? If, the length is 4 and width is 3.

A. 14

The sum of 4th multiple of 3 and 6th multiple of 2 is?

A. 6th multiple of 4

B. 3rd multiple of 7

C. 2nd multiple of 10

D. All of these

A square field whose one side lenth is 5 cm. Find the area of a square?

A. 𝟐𝟓𝒄𝒎𝟐

A team played 160 games and won 40% them.How many games did it loss?

A. 96 games.

There are 20 cups on the chair.He took 8 cups, how many do you have?

A. 8

B. 12

C. 28

D. 0

At a conference, 10 members shook hands with each other before and after the meeting. How many hand shakes occurred before?

A. 90

B. 100

C. 45

D. 5√4