Flutter Q_0

what is the output of this code?

const R = 3.1;

R=5;

print(R)

• 3.1

• 5

• 3

• Error

Fill the gaps.

___Declaring an integer

and printing it___

int x = 42;

print(x);

• //.........//

• <----...................----->

• ?-------------?

• /*............*/

which one print 10?

• int num =9;

  print ("the number is $num + 1");

• int num =9;

  print ("the number is ${num + 1}");

• int num =9;

  print ("the number is num +1");

• int num =9;

  print ("the number is " + (num +1));

var a ="4";

var b ="2";

print(a+b);

what is the output of this code?

• 6

• 4+2

• 42

• a+b

 

Which operator is used to determine the remainder?

• /

• %

• *

• !

var a = 9;

var b = 5;

print("a>b");

what is the output of this code?

• true

• 9>5

• a>b

• error

var a = 9;

var b = 5;

print(a>b);

what is the output of this code?

• false

• true

• Error

• a>b && 4>7

 Dart is an open source programming language developed by ......?

• Google

• Microsoft

• Oracle

if you initialize a variable as var,once assigned type cannot change?

• True

• False

Semicolons are .....?

• Required

• Optional