| Directions for questions: Select the missing number from the given responses. |
| 2 | 5 | 7 |
| 6 | 15 | 21 |
| 10 | 19 | ? |
A) 28
B) 52
C) 30
D) 25
Correct Answer: D
Solution :
\[2\times 3\Rightarrow 6+4=10\] \[5\times 3\Rightarrow 15+4=19\] Similarly, \[7\times 3\Rightarrow 21+4=\]
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