engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 Quantitative Aptitude Average
The average of twelve numbers is 38. The average of the first three numbers is 33, that of the next four numbers is \(35\frac{1}{2}\), and that of the next two numbers is 40. If the tenth number is less than the eleventh and twelfth numbers by 4 and 5, respectively, then the twelfth number is:
1
45
2
40
3
49
4
47