![In the following Venn diagram, the triangle stands for 'fathers', the circle stands for 'engineers', the hexagon stands for 'tax-payers](https://www.gkseries.com/blog/wp-content/uploads/2024/03/In-the-following-Venn-diagram-the-triangle-stands-for-fathers-the-circle-stands-for-engineers-the-hexagon-stands-for-tax-payers.jpg)
In the following Venn diagram, the triangle stands for ‘fathers’, the circle stands for ‘engineers’, the hexagon stands for ‘tax-payers’, and the rectangle stands for ‘blood donors’. The given numbers represent the number of persons in that particular category.
![](https://www.gkseries.com/blog/wp-content/uploads/2024/03/image-172-1024x885.png)
How many tax-payers are also blood donors?
A. 38
B. 63
C. 61
D. 55
Sol:
Number of tax-payers who also are blood donors is 27 + 36 = 63