(1) 7 (2)19 (3) 82 (4) 84
Solution :
If each number is multiplied
by a certain number, then the
average is also multiplied by that
number.
= Requires average = 7*12=84
Then option is (4) 84
(1) 7 (2)19 (3) 82 (4) 84
If each number is multiplied
by a certain number, then the
average is also multiplied by that
number.
= Requires average = 7*12=84
Then option is (4) 84