| Number of Children | Number of Houses |
| 0 | 6 |
| 1 | 16 |
| 2 | 15 |
| 3 | 3 |
A) 1.38
B) 1.63
C) 1.88
D) 1.13
Correct Answer: A
Solution :
Required average \[=\frac{6\times 0+16\times 1+15\times 2\times 3\times 3}{40}\] \[=\frac{16+30+9}{40}=\frac{55}{40}=1.375\] \[\approx 1.38\]
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