A) 4.5
B) 5
C) 2
D) 4
Correct Answer: C
Solution :
Let the fourth number be x. Sum of four numbers\[=5\times 4=20\] Sum of first three numbers \[=3x\times 3=9x\] Then, \[9x+x=20\] \[\Rightarrow \] \[x=2\]You need to login to perform this action.
You will be redirected in
3 sec