The first prime number is 2.

Correct Option: C

The first prime number is 2.

Let 10/11 = 110/N,
Then, 10N = 11 x 110
∴ N = (11 x 110) /10 = 121.

Correct Option: C

Let 10/11 = 110/N,
Then, 10N = 11 x 110
∴ N = (11 x 110) /10 = 121.

Required number is 2 x 4 x 6 = 48.

Correct Option: C

Required number is 2 x 4 x 6 = 48.

Let quotient = Q and remainder = R
Then, Divisor = 12 Q =5 R
Now, R = 48
⇒ 12Q = 5 x 48
⇒ Q = 20

Correct Option: D

Let quotient = Q and remainder = R
Then, Divisor = 12 Q =5 R
Now, R = 48
⇒ 12Q = 5 x 48
⇒ Q = 20

Dividend = Divisor x Quotient + Remainder
∴ dividend = ( 20 x 240 + 48 )
= 4848

Let the number be N
According to the question N x ( N x 3)/4 = 10800

Correct Option: C

Let the number be N
According to the question N x ( N x 3)/4 = 10800
⇒ 3N² / 4 = 10800
⇒ N² = (10800 x 4) / 3= 14400
N = √14400 = 120