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Now answer the following in binary digits:

                       1.  Write all the prime numbers between 1 and 10.



                       2.  Write all the even numbers between 1 and 10.


                       3.  Write the sum of 5 and 4.



                       4.  Write all the numbers divisible by 3 between 1 and 10.






                 CONDITIONS IN A PROGRAM

                 While writing a program, we need to make certain decisions based on the logic of the program. Such
                 situations are called conditions. Conditional statements are used in a program to instruct the computer
                 to make a decision. The result of a condition will always be either True or False.

                 if-then-else                                                            Start


                 The program executes the  statements
                 written inside the IF block when  the                                IF (Condition)
                 condition is True. If the condition is False,       True            to be checked            False
                 the  statements written  inside  the  else
                 block will be executed. A block refers to a    Statements inside IF              Statements inside ELSE
                                                                 block will execute
                 section of code that is grouped together.                                           block will execute


                 Look at these examples:                                                 Stop

                  Example 1:                                               Example 2:


                  READ Subject                                             READ marks
                  IF Subject = "Maths" THEN                                IF marks > 50 THEN
                     PRINT "Take out Maths book & notebook"                   PRINT "Pass"
                  ELSE                                                     ELSE
                     PRINT "Check timetable"                                  PRINT "Fail"

                  Example 3:                                               Example 4:
                  READ Rain                                                READ age
                  IF Rain = True THEN                                      IF age >= 18 THEN
                     PRINT "Carry an umbrella"                                PRINT “You are eligible to vote.”

                  ELSE                                                     ELSE
                     PRINT "Do not carry an umbrella"                         PRINT “You are not eligible to vote.”



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